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-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/BUILD.bazel171
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time.h332
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time_detail.h628
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/time_zone.h386
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h102
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/cctz_benchmark.cc1030
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_detail.cc94
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_test.cc1066
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.cc140
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.h52
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format.cc1029
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format_test.cc1603
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.cc45
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.h76
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.cc113
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.h93
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.cc965
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.h137
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.cc315
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.h55
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup.cc187
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup_test.cc1442
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.cc159
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.h132
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/tzfile.h122
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/src/zone_info_source.cc116
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/README.zoneinfo37
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/version1
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjanbin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Accrabin556 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Addis_Abababin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Algiersbin470 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Asmarabin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Asmerabin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bamakobin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Banguibin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Banjulbin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bissaubin149 -> 0 bytes
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-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bujumburabin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Cairobin1276 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Casablancabin1919 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Ceutabin562 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Conakrybin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Dakarbin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Dar_es_Salaambin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Djiboutibin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Doualabin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/El_Aaiunbin1830 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Freetownbin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Gaboronebin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Hararebin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Johannesburgbin190 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Jubabin449 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Kampalabin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Khartoumbin458 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Kigalibin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Kinshasabin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Lagosbin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Librevillebin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Lomebin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Luandabin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Lubumbashibin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Lusakabin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Malabobin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Maputobin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Maserubin190 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Mbabanebin190 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Mogadishubin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Monroviabin164 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Nairobibin182 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Ndjamenabin160 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Niameybin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Nouakchottbin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Ouagadougoubin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Porto-Novobin131 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Sao_Tomebin173 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Timbuktubin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Tripolibin431 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Tunisbin449 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Windhoekbin638 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Adakbin969 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Anchoragebin977 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Anguillabin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Antiguabin130 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Araguainabin592 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Buenos_Airesbin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Catamarcabin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/ComodRivadaviabin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Cordobabin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Jujuybin690 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/La_Riojabin717 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Mendozabin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Rio_Gallegosbin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Saltabin690 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/San_Juanbin717 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/San_Luisbin717 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Tucumanbin726 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Argentina/Ushuaiabin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Arubabin151 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Asuncionbin884 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Atikokanbin224 -> 0 bytes
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-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Bahia_Banderasbin530 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Barbadosbin231 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Belembin394 -> 0 bytes
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-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Boa_Vistabin430 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Bogotabin179 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Boisebin999 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Buenos_Airesbin708 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Cambridge_Baybin768 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Campo_Grandebin952 -> 0 bytes
-rw-r--r--third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/America/Cancunbin529 -> 0 bytes
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diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/BUILD.bazel b/third_party/abseil_cpp/absl/time/internal/cctz/BUILD.bazel
deleted file mode 100644
index 45a952924d98..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/BUILD.bazel
+++ /dev/null
@@ -1,171 +0,0 @@
-# Copyright 2016 Google Inc. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#   https://www.apache.org/licenses/LICENSE-2.0
-#
-#   Unless required by applicable law or agreed to in writing, software
-#   distributed under the License is distributed on an "AS IS" BASIS,
-#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#   See the License for the specific language governing permissions and
-#   limitations under the License.
-
-load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
-
-package(features = ["-parse_headers"])
-
-licenses(["notice"])
-
-filegroup(
-    name = "zoneinfo",
-    srcs = glob(["testdata/zoneinfo/**"]),
-)
-
-config_setting(
-    name = "osx",
-    constraint_values = [
-        "@bazel_tools//platforms:osx",
-    ],
-)
-
-config_setting(
-    name = "ios",
-    constraint_values = [
-        "@bazel_tools//platforms:ios",
-    ],
-)
-
-### libraries
-
-cc_library(
-    name = "civil_time",
-    srcs = ["src/civil_time_detail.cc"],
-    hdrs = [
-        "include/cctz/civil_time.h",
-    ],
-    textual_hdrs = ["include/cctz/civil_time_detail.h"],
-    visibility = ["//visibility:public"],
-    deps = ["//absl/base:config"],
-)
-
-cc_library(
-    name = "time_zone",
-    srcs = [
-        "src/time_zone_fixed.cc",
-        "src/time_zone_fixed.h",
-        "src/time_zone_format.cc",
-        "src/time_zone_if.cc",
-        "src/time_zone_if.h",
-        "src/time_zone_impl.cc",
-        "src/time_zone_impl.h",
-        "src/time_zone_info.cc",
-        "src/time_zone_info.h",
-        "src/time_zone_libc.cc",
-        "src/time_zone_libc.h",
-        "src/time_zone_lookup.cc",
-        "src/time_zone_posix.cc",
-        "src/time_zone_posix.h",
-        "src/tzfile.h",
-        "src/zone_info_source.cc",
-    ],
-    hdrs = [
-        "include/cctz/time_zone.h",
-        "include/cctz/zone_info_source.h",
-    ],
-    linkopts = select({
-        ":osx": [
-            "-framework Foundation",
-        ],
-        ":ios": [
-            "-framework Foundation",
-        ],
-        "//conditions:default": [],
-    }),
-    visibility = ["//visibility:public"],
-    deps = [
-        ":civil_time",
-        "//absl/base:config",
-    ],
-)
-
-### tests
-
-test_suite(
-    name = "all_tests",
-    visibility = ["//visibility:public"],
-)
-
-cc_test(
-    name = "civil_time_test",
-    size = "small",
-    srcs = ["src/civil_time_test.cc"],
-    deps = [
-        ":civil_time",
-        "//absl/base:config",
-        "@com_google_googletest//:gtest_main",
-    ],
-)
-
-cc_test(
-    name = "time_zone_format_test",
-    size = "small",
-    srcs = ["src/time_zone_format_test.cc"],
-    data = [":zoneinfo"],
-    tags = [
-        "no_test_android_arm",
-        "no_test_android_arm64",
-        "no_test_android_x86",
-    ],
-    deps = [
-        ":civil_time",
-        ":time_zone",
-        "//absl/base:config",
-        "@com_google_googletest//:gtest_main",
-    ],
-)
-
-cc_test(
-    name = "time_zone_lookup_test",
-    size = "small",
-    timeout = "moderate",
-    srcs = ["src/time_zone_lookup_test.cc"],
-    data = [":zoneinfo"],
-    tags = [
-        "no_test_android_arm",
-        "no_test_android_arm64",
-        "no_test_android_x86",
-    ],
-    deps = [
-        ":civil_time",
-        ":time_zone",
-        "//absl/base:config",
-        "@com_google_googletest//:gtest_main",
-    ],
-)
-
-### benchmarks
-
-cc_test(
-    name = "cctz_benchmark",
-    srcs = [
-        "src/cctz_benchmark.cc",
-        "src/time_zone_if.h",
-        "src/time_zone_impl.h",
-        "src/time_zone_info.h",
-        "src/tzfile.h",
-    ],
-    linkstatic = 1,
-    tags = ["benchmark"],
-    deps = [
-        ":civil_time",
-        ":time_zone",
-        "//absl/base:config",
-        "@com_github_google_benchmark//:benchmark_main",
-    ],
-)
-
-### examples
-
-### binaries
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time.h b/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time.h
deleted file mode 100644
index d47ff86fe43e..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time.h
+++ /dev/null
@@ -1,332 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
-#define ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time_detail.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// The term "civil time" refers to the legally recognized human-scale time
-// that is represented by the six fields YYYY-MM-DD hh:mm:ss. Modern-day civil
-// time follows the Gregorian Calendar and is a time-zone-independent concept.
-// A "date" is perhaps the most common example of a civil time (represented in
-// this library as cctz::civil_day). This library provides six classes and a
-// handful of functions that help with rounding, iterating, and arithmetic on
-// civil times while avoiding complications like daylight-saving time (DST).
-//
-// The following six classes form the core of this civil-time library:
-//
-//   * civil_second
-//   * civil_minute
-//   * civil_hour
-//   * civil_day
-//   * civil_month
-//   * civil_year
-//
-// Each class is a simple value type with the same interface for construction
-// and the same six accessors for each of the civil fields (year, month, day,
-// hour, minute, and second, aka YMDHMS). These classes differ only in their
-// alignment, which is indicated by the type name and specifies the field on
-// which arithmetic operates.
-//
-// Each class can be constructed by passing up to six optional integer
-// arguments representing the YMDHMS fields (in that order) to the
-// constructor. Omitted fields are assigned their minimum valid value. Hours,
-// minutes, and seconds will be set to 0, month and day will be set to 1, and
-// since there is no minimum valid year, it will be set to 1970. So, a
-// default-constructed civil-time object will have YMDHMS fields representing
-// "1970-01-01 00:00:00". Fields that are out-of-range are normalized (e.g.,
-// October 32 -> November 1) so that all civil-time objects represent valid
-// values.
-//
-// Each civil-time class is aligned to the civil-time field indicated in the
-// class's name after normalization. Alignment is performed by setting all the
-// inferior fields to their minimum valid value (as described above). The
-// following are examples of how each of the six types would align the fields
-// representing November 22, 2015 at 12:34:56 in the afternoon. (Note: the
-// string format used here is not important; it's just a shorthand way of
-// showing the six YMDHMS fields.)
-//
-//   civil_second  2015-11-22 12:34:56
-//   civil_minute  2015-11-22 12:34:00
-//   civil_hour    2015-11-22 12:00:00
-//   civil_day     2015-11-22 00:00:00
-//   civil_month   2015-11-01 00:00:00
-//   civil_year    2015-01-01 00:00:00
-//
-// Each civil-time type performs arithmetic on the field to which it is
-// aligned. This means that adding 1 to a civil_day increments the day field
-// (normalizing as necessary), and subtracting 7 from a civil_month operates
-// on the month field (normalizing as necessary). All arithmetic produces a
-// valid civil time. Difference requires two similarly aligned civil-time
-// objects and returns the scalar answer in units of the objects' alignment.
-// For example, the difference between two civil_hour objects will give an
-// answer in units of civil hours.
-//
-// In addition to the six civil-time types just described, there are
-// a handful of helper functions and algorithms for performing common
-// calculations. These are described below.
-//
-// Note: In C++14 and later, this library is usable in a constexpr context.
-//
-// CONSTRUCTION:
-//
-// Each of the civil-time types can be constructed in two ways: by directly
-// passing to the constructor up to six (optional) integers representing the
-// YMDHMS fields, or by copying the YMDHMS fields from a differently aligned
-// civil-time type.
-//
-//   civil_day default_value;  // 1970-01-01 00:00:00
-//
-//   civil_day a(2015, 2, 3);           // 2015-02-03 00:00:00
-//   civil_day b(2015, 2, 3, 4, 5, 6);  // 2015-02-03 00:00:00
-//   civil_day c(2015);                 // 2015-01-01 00:00:00
-//
-//   civil_second ss(2015, 2, 3, 4, 5, 6);  // 2015-02-03 04:05:06
-//   civil_minute mm(ss);                   // 2015-02-03 04:05:00
-//   civil_hour hh(mm);                     // 2015-02-03 04:00:00
-//   civil_day d(hh);                       // 2015-02-03 00:00:00
-//   civil_month m(d);                      // 2015-02-01 00:00:00
-//   civil_year y(m);                       // 2015-01-01 00:00:00
-//
-//   m = civil_month(y);     // 2015-01-01 00:00:00
-//   d = civil_day(m);       // 2015-01-01 00:00:00
-//   hh = civil_hour(d);     // 2015-01-01 00:00:00
-//   mm = civil_minute(hh);  // 2015-01-01 00:00:00
-//   ss = civil_second(mm);  // 2015-01-01 00:00:00
-//
-// ALIGNMENT CONVERSION:
-//
-// The alignment of a civil-time object cannot change, but the object may be
-// used to construct a new object with a different alignment. This is referred
-// to as "realigning". When realigning to a type with the same or more
-// precision (e.g., civil_day -> civil_second), the conversion may be
-// performed implicitly since no information is lost. However, if information
-// could be discarded (e.g., civil_second -> civil_day), the conversion must
-// be explicit at the call site.
-//
-//   void fun(const civil_day& day);
-//
-//   civil_second cs;
-//   fun(cs);  // Won't compile because data may be discarded
-//   fun(civil_day(cs));  // OK: explicit conversion
-//
-//   civil_day cd;
-//   fun(cd);  // OK: no conversion needed
-//
-//   civil_month cm;
-//   fun(cm);  // OK: implicit conversion to civil_day
-//
-// NORMALIZATION:
-//
-// Integer arguments passed to the constructor may be out-of-range, in which
-// case they are normalized to produce a valid civil-time object. This enables
-// natural arithmetic on constructor arguments without worrying about the
-// field's range. Normalization guarantees that there are no invalid
-// civil-time objects.
-//
-//   civil_day d(2016, 10, 32);  // Out-of-range day; normalized to 2016-11-01
-//
-// Note: If normalization is undesired, you can signal an error by comparing
-// the constructor arguments to the normalized values returned by the YMDHMS
-// properties.
-//
-// PROPERTIES:
-//
-// All civil-time types have accessors for all six of the civil-time fields:
-// year, month, day, hour, minute, and second. Recall that fields inferior to
-// the type's alignment will be set to their minimum valid value.
-//
-//   civil_day d(2015, 6, 28);
-//   // d.year() == 2015
-//   // d.month() == 6
-//   // d.day() == 28
-//   // d.hour() == 0
-//   // d.minute() == 0
-//   // d.second() == 0
-//
-// COMPARISON:
-//
-// Comparison always considers all six YMDHMS fields, regardless of the type's
-// alignment. Comparison between differently aligned civil-time types is
-// allowed.
-//
-//   civil_day feb_3(2015, 2, 3);  // 2015-02-03 00:00:00
-//   civil_day mar_4(2015, 3, 4);  // 2015-03-04 00:00:00
-//   // feb_3 < mar_4
-//   // civil_year(feb_3) == civil_year(mar_4)
-//
-//   civil_second feb_3_noon(2015, 2, 3, 12, 0, 0);  // 2015-02-03 12:00:00
-//   // feb_3 < feb_3_noon
-//   // feb_3 == civil_day(feb_3_noon)
-//
-//   // Iterates all the days of February 2015.
-//   for (civil_day d(2015, 2, 1); d < civil_month(2015, 3); ++d) {
-//     // ...
-//   }
-//
-// STREAMING:
-//
-// Each civil-time type may be sent to an output stream using operator<<().
-// The output format follows the pattern "YYYY-MM-DDThh:mm:ss" where fields
-// inferior to the type's alignment are omitted.
-//
-//   civil_second cs(2015, 2, 3, 4, 5, 6);
-//   std::cout << cs << "\n";  // Outputs: 2015-02-03T04:05:06
-//
-//   civil_day cd(cs);
-//   std::cout << cd << "\n";  // Outputs: 2015-02-03
-//
-//   civil_year cy(cs);
-//   std::cout << cy << "\n";  // Outputs: 2015
-//
-// ARITHMETIC:
-//
-// Civil-time types support natural arithmetic operators such as addition,
-// subtraction, and difference. Arithmetic operates on the civil-time field
-// indicated in the type's name. Difference requires arguments with the same
-// alignment and returns the answer in units of the alignment.
-//
-//   civil_day a(2015, 2, 3);
-//   ++a;                         // 2015-02-04 00:00:00
-//   --a;                         // 2015-02-03 00:00:00
-//   civil_day b = a + 1;         // 2015-02-04 00:00:00
-//   civil_day c = 1 + b;         // 2015-02-05 00:00:00
-//   int n = c - a;               // n = 2 (civil days)
-//   int m = c - civil_month(c);  // Won't compile: different types.
-//
-// EXAMPLE: Adding a month to January 31.
-//
-// One of the classic questions that arises when considering a civil-time
-// library (or a date library or a date/time library) is this: "What happens
-// when you add a month to January 31?" This is an interesting question
-// because there could be a number of possible answers:
-//
-//   1. March 3 (or 2 if a leap year). This may make sense if the operation
-//      wants the equivalent of February 31.
-//   2. February 28 (or 29 if a leap year). This may make sense if the operation
-//      wants the last day of January to go to the last day of February.
-//   3. Error. The caller may get some error, an exception, an invalid date
-//      object, or maybe false is returned. This may make sense because there is
-//      no single unambiguously correct answer to the question.
-//
-// Practically speaking, any answer that is not what the programmer intended
-// is the wrong answer.
-//
-// This civil-time library avoids the problem by making it impossible to ask
-// ambiguous questions. All civil-time objects are aligned to a particular
-// civil-field boundary (such as aligned to a year, month, day, hour, minute,
-// or second), and arithmetic operates on the field to which the object is
-// aligned. This means that in order to "add a month" the object must first be
-// aligned to a month boundary, which is equivalent to the first day of that
-// month.
-//
-// Of course, there are ways to compute an answer the question at hand using
-// this civil-time library, but they require the programmer to be explicit
-// about the answer they expect. To illustrate, let's see how to compute all
-// three of the above possible answers to the question of "Jan 31 plus 1
-// month":
-//
-//   const civil_day d(2015, 1, 31);
-//
-//   // Answer 1:
-//   // Add 1 to the month field in the constructor, and rely on normalization.
-//   const auto ans_normalized = civil_day(d.year(), d.month() + 1, d.day());
-//   // ans_normalized == 2015-03-03 (aka Feb 31)
-//
-//   // Answer 2:
-//   // Add 1 to month field, capping to the end of next month.
-//   const auto next_month = civil_month(d) + 1;
-//   const auto last_day_of_next_month = civil_day(next_month + 1) - 1;
-//   const auto ans_capped = std::min(ans_normalized, last_day_of_next_month);
-//   // ans_capped == 2015-02-28
-//
-//   // Answer 3:
-//   // Signal an error if the normalized answer is not in next month.
-//   if (civil_month(ans_normalized) != next_month) {
-//     // error, month overflow
-//   }
-//
-using civil_year = detail::civil_year;
-using civil_month = detail::civil_month;
-using civil_day = detail::civil_day;
-using civil_hour = detail::civil_hour;
-using civil_minute = detail::civil_minute;
-using civil_second = detail::civil_second;
-
-// An enum class with members monday, tuesday, wednesday, thursday, friday,
-// saturday, and sunday. These enum values may be sent to an output stream
-// using operator<<(). The result is the full weekday name in English with a
-// leading capital letter.
-//
-//   weekday wd = weekday::thursday;
-//   std::cout << wd << "\n";  // Outputs: Thursday
-//
-using detail::weekday;
-
-// Returns the weekday for the given civil-time value.
-//
-//   civil_day a(2015, 8, 13);
-//   weekday wd = get_weekday(a);  // wd == weekday::thursday
-//
-using detail::get_weekday;
-
-// Returns the civil_day that strictly follows or precedes the given
-// civil_day, and that falls on the given weekday.
-//
-// For example, given:
-//
-//     August 2015
-// Su Mo Tu We Th Fr Sa
-//                    1
-//  2  3  4  5  6  7  8
-//  9 10 11 12 13 14 15
-// 16 17 18 19 20 21 22
-// 23 24 25 26 27 28 29
-// 30 31
-//
-//   civil_day a(2015, 8, 13);  // get_weekday(a) == weekday::thursday
-//   civil_day b = next_weekday(a, weekday::thursday);  // b = 2015-08-20
-//   civil_day c = prev_weekday(a, weekday::thursday);  // c = 2015-08-06
-//
-//   civil_day d = ...
-//   // Gets the following Thursday if d is not already Thursday
-//   civil_day thurs1 = next_weekday(d - 1, weekday::thursday);
-//   // Gets the previous Thursday if d is not already Thursday
-//   civil_day thurs2 = prev_weekday(d + 1, weekday::thursday);
-//
-using detail::next_weekday;
-using detail::prev_weekday;
-
-// Returns the day-of-year for the given civil-time value.
-//
-//   civil_day a(2015, 1, 1);
-//   int yd_jan_1 = get_yearday(a);   // yd_jan_1 = 1
-//   civil_day b(2015, 12, 31);
-//   int yd_dec_31 = get_yearday(b);  // yd_dec_31 = 365
-//
-using detail::get_yearday;
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time_detail.h b/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time_detail.h
deleted file mode 100644
index 8aadde57ca72..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/civil_time_detail.h
+++ /dev/null
@@ -1,628 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_DETAIL_H_
-#define ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_DETAIL_H_
-
-#include <cstdint>
-#include <limits>
-#include <ostream>
-#include <type_traits>
-
-#include "absl/base/config.h"
-
-// Disable constexpr support unless we are in C++14 mode.
-#if __cpp_constexpr >= 201304 || (defined(_MSC_VER) && _MSC_VER >= 1910)
-#define CONSTEXPR_D constexpr  // data
-#define CONSTEXPR_F constexpr  // function
-#define CONSTEXPR_M constexpr  // member
-#else
-#define CONSTEXPR_D const
-#define CONSTEXPR_F inline
-#define CONSTEXPR_M
-#endif
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// Support years that at least span the range of 64-bit time_t values.
-using year_t = std::int_fast64_t;
-
-// Type alias that indicates an argument is not normalized (e.g., the
-// constructor parameters and operands/results of addition/subtraction).
-using diff_t = std::int_fast64_t;
-
-namespace detail {
-
-// Type aliases that indicate normalized argument values.
-using month_t = std::int_fast8_t;   // [1:12]
-using day_t = std::int_fast8_t;     // [1:31]
-using hour_t = std::int_fast8_t;    // [0:23]
-using minute_t = std::int_fast8_t;  // [0:59]
-using second_t = std::int_fast8_t;  // [0:59]
-
-// Normalized civil-time fields: Y-M-D HH:MM:SS.
-struct fields {
-  CONSTEXPR_M fields(year_t year, month_t month, day_t day, hour_t hour,
-                     minute_t minute, second_t second)
-      : y(year), m(month), d(day), hh(hour), mm(minute), ss(second) {}
-  std::int_least64_t y;
-  std::int_least8_t m;
-  std::int_least8_t d;
-  std::int_least8_t hh;
-  std::int_least8_t mm;
-  std::int_least8_t ss;
-};
-
-struct second_tag {};
-struct minute_tag : second_tag {};
-struct hour_tag : minute_tag {};
-struct day_tag : hour_tag {};
-struct month_tag : day_tag {};
-struct year_tag : month_tag {};
-
-////////////////////////////////////////////////////////////////////////
-
-// Field normalization (without avoidable overflow).
-
-namespace impl {
-
-CONSTEXPR_F bool is_leap_year(year_t y) noexcept {
-  return y % 4 == 0 && (y % 100 != 0 || y % 400 == 0);
-}
-CONSTEXPR_F int year_index(year_t y, month_t m) noexcept {
-  return (static_cast<int>((y + (m > 2)) % 400) + 400) % 400;
-}
-CONSTEXPR_F int days_per_century(year_t y, month_t m) noexcept {
-  const int yi = year_index(y, m);
-  return 36524 + (yi == 0 || yi > 300);
-}
-CONSTEXPR_F int days_per_4years(year_t y, month_t m) noexcept {
-  const int yi = year_index(y, m);
-  return 1460 + (yi == 0 || yi > 300 || (yi - 1) % 100 < 96);
-}
-CONSTEXPR_F int days_per_year(year_t y, month_t m) noexcept {
-  return is_leap_year(y + (m > 2)) ? 366 : 365;
-}
-CONSTEXPR_F int days_per_month(year_t y, month_t m) noexcept {
-  CONSTEXPR_D int k_days_per_month[1 + 12] = {
-      -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31  // non leap year
-  };
-  return k_days_per_month[m] + (m == 2 && is_leap_year(y));
-}
-
-CONSTEXPR_F fields n_day(year_t y, month_t m, diff_t d, diff_t cd, hour_t hh,
-                         minute_t mm, second_t ss) noexcept {
-  year_t ey = y % 400;
-  const year_t oey = ey;
-  ey += (cd / 146097) * 400;
-  cd %= 146097;
-  if (cd < 0) {
-    ey -= 400;
-    cd += 146097;
-  }
-  ey += (d / 146097) * 400;
-  d = d % 146097 + cd;
-  if (d > 0) {
-    if (d > 146097) {
-      ey += 400;
-      d -= 146097;
-    }
-  } else {
-    if (d > -365) {
-      // We often hit the previous year when stepping a civil time backwards,
-      // so special case it to avoid counting up by 100/4/1-year chunks.
-      ey -= 1;
-      d += days_per_year(ey, m);
-    } else {
-      ey -= 400;
-      d += 146097;
-    }
-  }
-  if (d > 365) {
-    for (;;) {
-      int n = days_per_century(ey, m);
-      if (d <= n) break;
-      d -= n;
-      ey += 100;
-    }
-    for (;;) {
-      int n = days_per_4years(ey, m);
-      if (d <= n) break;
-      d -= n;
-      ey += 4;
-    }
-    for (;;) {
-      int n = days_per_year(ey, m);
-      if (d <= n) break;
-      d -= n;
-      ++ey;
-    }
-  }
-  if (d > 28) {
-    for (;;) {
-      int n = days_per_month(ey, m);
-      if (d <= n) break;
-      d -= n;
-      if (++m > 12) {
-        ++ey;
-        m = 1;
-      }
-    }
-  }
-  return fields(y + (ey - oey), m, static_cast<day_t>(d), hh, mm, ss);
-}
-CONSTEXPR_F fields n_mon(year_t y, diff_t m, diff_t d, diff_t cd, hour_t hh,
-                         minute_t mm, second_t ss) noexcept {
-  if (m != 12) {
-    y += m / 12;
-    m %= 12;
-    if (m <= 0) {
-      y -= 1;
-      m += 12;
-    }
-  }
-  return n_day(y, static_cast<month_t>(m), d, cd, hh, mm, ss);
-}
-CONSTEXPR_F fields n_hour(year_t y, diff_t m, diff_t d, diff_t cd, diff_t hh,
-                          minute_t mm, second_t ss) noexcept {
-  cd += hh / 24;
-  hh %= 24;
-  if (hh < 0) {
-    cd -= 1;
-    hh += 24;
-  }
-  return n_mon(y, m, d, cd, static_cast<hour_t>(hh), mm, ss);
-}
-CONSTEXPR_F fields n_min(year_t y, diff_t m, diff_t d, diff_t hh, diff_t ch,
-                         diff_t mm, second_t ss) noexcept {
-  ch += mm / 60;
-  mm %= 60;
-  if (mm < 0) {
-    ch -= 1;
-    mm += 60;
-  }
-  return n_hour(y, m, d, hh / 24 + ch / 24, hh % 24 + ch % 24,
-                static_cast<minute_t>(mm), ss);
-}
-CONSTEXPR_F fields n_sec(year_t y, diff_t m, diff_t d, diff_t hh, diff_t mm,
-                         diff_t ss) noexcept {
-  // Optimization for when (non-constexpr) fields are already normalized.
-  if (0 <= ss && ss < 60) {
-    const second_t nss = static_cast<second_t>(ss);
-    if (0 <= mm && mm < 60) {
-      const minute_t nmm = static_cast<minute_t>(mm);
-      if (0 <= hh && hh < 24) {
-        const hour_t nhh = static_cast<hour_t>(hh);
-        if (1 <= d && d <= 28 && 1 <= m && m <= 12) {
-          const day_t nd = static_cast<day_t>(d);
-          const month_t nm = static_cast<month_t>(m);
-          return fields(y, nm, nd, nhh, nmm, nss);
-        }
-        return n_mon(y, m, d, 0, nhh, nmm, nss);
-      }
-      return n_hour(y, m, d, hh / 24, hh % 24, nmm, nss);
-    }
-    return n_min(y, m, d, hh, mm / 60, mm % 60, nss);
-  }
-  diff_t cm = ss / 60;
-  ss %= 60;
-  if (ss < 0) {
-    cm -= 1;
-    ss += 60;
-  }
-  return n_min(y, m, d, hh, mm / 60 + cm / 60, mm % 60 + cm % 60,
-               static_cast<second_t>(ss));
-}
-
-}  // namespace impl
-
-////////////////////////////////////////////////////////////////////////
-
-// Increments the indicated (normalized) field by "n".
-CONSTEXPR_F fields step(second_tag, fields f, diff_t n) noexcept {
-  return impl::n_sec(f.y, f.m, f.d, f.hh, f.mm + n / 60, f.ss + n % 60);
-}
-CONSTEXPR_F fields step(minute_tag, fields f, diff_t n) noexcept {
-  return impl::n_min(f.y, f.m, f.d, f.hh + n / 60, 0, f.mm + n % 60, f.ss);
-}
-CONSTEXPR_F fields step(hour_tag, fields f, diff_t n) noexcept {
-  return impl::n_hour(f.y, f.m, f.d + n / 24, 0, f.hh + n % 24, f.mm, f.ss);
-}
-CONSTEXPR_F fields step(day_tag, fields f, diff_t n) noexcept {
-  return impl::n_day(f.y, f.m, f.d, n, f.hh, f.mm, f.ss);
-}
-CONSTEXPR_F fields step(month_tag, fields f, diff_t n) noexcept {
-  return impl::n_mon(f.y + n / 12, f.m + n % 12, f.d, 0, f.hh, f.mm, f.ss);
-}
-CONSTEXPR_F fields step(year_tag, fields f, diff_t n) noexcept {
-  return fields(f.y + n, f.m, f.d, f.hh, f.mm, f.ss);
-}
-
-////////////////////////////////////////////////////////////////////////
-
-namespace impl {
-
-// Returns (v * f + a) but avoiding intermediate overflow when possible.
-CONSTEXPR_F diff_t scale_add(diff_t v, diff_t f, diff_t a) noexcept {
-  return (v < 0) ? ((v + 1) * f + a) - f : ((v - 1) * f + a) + f;
-}
-
-// Map a (normalized) Y/M/D to the number of days before/after 1970-01-01.
-// Probably overflows for years outside [-292277022656:292277026595].
-CONSTEXPR_F diff_t ymd_ord(year_t y, month_t m, day_t d) noexcept {
-  const diff_t eyear = (m <= 2) ? y - 1 : y;
-  const diff_t era = (eyear >= 0 ? eyear : eyear - 399) / 400;
-  const diff_t yoe = eyear - era * 400;
-  const diff_t doy = (153 * (m + (m > 2 ? -3 : 9)) + 2) / 5 + d - 1;
-  const diff_t doe = yoe * 365 + yoe / 4 - yoe / 100 + doy;
-  return era * 146097 + doe - 719468;
-}
-
-// Returns the difference in days between two normalized Y-M-D tuples.
-// ymd_ord() will encounter integer overflow given extreme year values,
-// yet the difference between two such extreme values may actually be
-// small, so we take a little care to avoid overflow when possible by
-// exploiting the 146097-day cycle.
-CONSTEXPR_F diff_t day_difference(year_t y1, month_t m1, day_t d1, year_t y2,
-                                  month_t m2, day_t d2) noexcept {
-  const diff_t a_c4_off = y1 % 400;
-  const diff_t b_c4_off = y2 % 400;
-  diff_t c4_diff = (y1 - a_c4_off) - (y2 - b_c4_off);
-  diff_t delta = ymd_ord(a_c4_off, m1, d1) - ymd_ord(b_c4_off, m2, d2);
-  if (c4_diff > 0 && delta < 0) {
-    delta += 2 * 146097;
-    c4_diff -= 2 * 400;
-  } else if (c4_diff < 0 && delta > 0) {
-    delta -= 2 * 146097;
-    c4_diff += 2 * 400;
-  }
-  return (c4_diff / 400 * 146097) + delta;
-}
-
-}  // namespace impl
-
-// Returns the difference between fields structs using the indicated unit.
-CONSTEXPR_F diff_t difference(year_tag, fields f1, fields f2) noexcept {
-  return f1.y - f2.y;
-}
-CONSTEXPR_F diff_t difference(month_tag, fields f1, fields f2) noexcept {
-  return impl::scale_add(difference(year_tag{}, f1, f2), 12, (f1.m - f2.m));
-}
-CONSTEXPR_F diff_t difference(day_tag, fields f1, fields f2) noexcept {
-  return impl::day_difference(f1.y, f1.m, f1.d, f2.y, f2.m, f2.d);
-}
-CONSTEXPR_F diff_t difference(hour_tag, fields f1, fields f2) noexcept {
-  return impl::scale_add(difference(day_tag{}, f1, f2), 24, (f1.hh - f2.hh));
-}
-CONSTEXPR_F diff_t difference(minute_tag, fields f1, fields f2) noexcept {
-  return impl::scale_add(difference(hour_tag{}, f1, f2), 60, (f1.mm - f2.mm));
-}
-CONSTEXPR_F diff_t difference(second_tag, fields f1, fields f2) noexcept {
-  return impl::scale_add(difference(minute_tag{}, f1, f2), 60, f1.ss - f2.ss);
-}
-
-////////////////////////////////////////////////////////////////////////
-
-// Aligns the (normalized) fields struct to the indicated field.
-CONSTEXPR_F fields align(second_tag, fields f) noexcept { return f; }
-CONSTEXPR_F fields align(minute_tag, fields f) noexcept {
-  return fields{f.y, f.m, f.d, f.hh, f.mm, 0};
-}
-CONSTEXPR_F fields align(hour_tag, fields f) noexcept {
-  return fields{f.y, f.m, f.d, f.hh, 0, 0};
-}
-CONSTEXPR_F fields align(day_tag, fields f) noexcept {
-  return fields{f.y, f.m, f.d, 0, 0, 0};
-}
-CONSTEXPR_F fields align(month_tag, fields f) noexcept {
-  return fields{f.y, f.m, 1, 0, 0, 0};
-}
-CONSTEXPR_F fields align(year_tag, fields f) noexcept {
-  return fields{f.y, 1, 1, 0, 0, 0};
-}
-
-////////////////////////////////////////////////////////////////////////
-
-namespace impl {
-
-template <typename H>
-H AbslHashValueImpl(second_tag, H h, fields f) {
-  return H::combine(std::move(h), f.y, f.m, f.d, f.hh, f.mm, f.ss);
-}
-template <typename H>
-H AbslHashValueImpl(minute_tag, H h, fields f) {
-  return H::combine(std::move(h), f.y, f.m, f.d, f.hh, f.mm);
-}
-template <typename H>
-H AbslHashValueImpl(hour_tag, H h, fields f) {
-  return H::combine(std::move(h), f.y, f.m, f.d, f.hh);
-}
-template <typename H>
-H AbslHashValueImpl(day_tag, H h, fields f) {
-  return H::combine(std::move(h), f.y, f.m, f.d);
-}
-template <typename H>
-H AbslHashValueImpl(month_tag, H h, fields f) {
-  return H::combine(std::move(h), f.y, f.m);
-}
-template <typename H>
-H AbslHashValueImpl(year_tag, H h, fields f) {
-  return H::combine(std::move(h), f.y);
-}
-
-}  // namespace impl
-
-////////////////////////////////////////////////////////////////////////
-
-template <typename T>
-class civil_time {
- public:
-  explicit CONSTEXPR_M civil_time(year_t y, diff_t m = 1, diff_t d = 1,
-                                  diff_t hh = 0, diff_t mm = 0,
-                                  diff_t ss = 0) noexcept
-      : civil_time(impl::n_sec(y, m, d, hh, mm, ss)) {}
-
-  CONSTEXPR_M civil_time() noexcept : f_{1970, 1, 1, 0, 0, 0} {}
-  civil_time(const civil_time&) = default;
-  civil_time& operator=(const civil_time&) = default;
-
-  // Conversion between civil times of different alignment. Conversion to
-  // a more precise alignment is allowed implicitly (e.g., day -> hour),
-  // but conversion where information is discarded must be explicit
-  // (e.g., second -> minute).
-  template <typename U, typename S>
-  using preserves_data =
-      typename std::enable_if<std::is_base_of<U, S>::value>::type;
-  template <typename U>
-  CONSTEXPR_M civil_time(const civil_time<U>& ct,
-                         preserves_data<T, U>* = nullptr) noexcept
-      : civil_time(ct.f_) {}
-  template <typename U>
-  explicit CONSTEXPR_M civil_time(const civil_time<U>& ct,
-                                  preserves_data<U, T>* = nullptr) noexcept
-      : civil_time(ct.f_) {}
-
-  // Factories for the maximum/minimum representable civil_time.
-  static CONSTEXPR_F civil_time(max)() {
-    const auto max_year = (std::numeric_limits<std::int_least64_t>::max)();
-    return civil_time(max_year, 12, 31, 23, 59, 59);
-  }
-  static CONSTEXPR_F civil_time(min)() {
-    const auto min_year = (std::numeric_limits<std::int_least64_t>::min)();
-    return civil_time(min_year, 1, 1, 0, 0, 0);
-  }
-
-  // Field accessors.  Note: All but year() return an int.
-  CONSTEXPR_M year_t year() const noexcept { return f_.y; }
-  CONSTEXPR_M int month() const noexcept { return f_.m; }
-  CONSTEXPR_M int day() const noexcept { return f_.d; }
-  CONSTEXPR_M int hour() const noexcept { return f_.hh; }
-  CONSTEXPR_M int minute() const noexcept { return f_.mm; }
-  CONSTEXPR_M int second() const noexcept { return f_.ss; }
-
-  // Assigning arithmetic.
-  CONSTEXPR_M civil_time& operator+=(diff_t n) noexcept {
-    return *this = *this + n;
-  }
-  CONSTEXPR_M civil_time& operator-=(diff_t n) noexcept {
-    return *this = *this - n;
-  }
-  CONSTEXPR_M civil_time& operator++() noexcept { return *this += 1; }
-  CONSTEXPR_M civil_time operator++(int) noexcept {
-    const civil_time a = *this;
-    ++*this;
-    return a;
-  }
-  CONSTEXPR_M civil_time& operator--() noexcept { return *this -= 1; }
-  CONSTEXPR_M civil_time operator--(int) noexcept {
-    const civil_time a = *this;
-    --*this;
-    return a;
-  }
-
-  // Binary arithmetic operators.
-  friend CONSTEXPR_F civil_time operator+(civil_time a, diff_t n) noexcept {
-    return civil_time(step(T{}, a.f_, n));
-  }
-  friend CONSTEXPR_F civil_time operator+(diff_t n, civil_time a) noexcept {
-    return a + n;
-  }
-  friend CONSTEXPR_F civil_time operator-(civil_time a, diff_t n) noexcept {
-    return n != (std::numeric_limits<diff_t>::min)()
-               ? civil_time(step(T{}, a.f_, -n))
-               : civil_time(step(T{}, step(T{}, a.f_, -(n + 1)), 1));
-  }
-  friend CONSTEXPR_F diff_t operator-(civil_time lhs, civil_time rhs) noexcept {
-    return difference(T{}, lhs.f_, rhs.f_);
-  }
-
-  template <typename H>
-  friend H AbslHashValue(H h, civil_time a) {
-    return impl::AbslHashValueImpl(T{}, std::move(h), a.f_);
-  }
-
- private:
-  // All instantiations of this template are allowed to call the following
-  // private constructor and access the private fields member.
-  template <typename U>
-  friend class civil_time;
-
-  // The designated constructor that all others eventually call.
-  explicit CONSTEXPR_M civil_time(fields f) noexcept : f_(align(T{}, f)) {}
-
-  fields f_;
-};
-
-// Disallows difference between differently aligned types.
-// auto n = civil_day(...) - civil_hour(...);  // would be confusing.
-template <typename T, typename U>
-CONSTEXPR_F diff_t operator-(civil_time<T>, civil_time<U>) = delete;
-
-using civil_year = civil_time<year_tag>;
-using civil_month = civil_time<month_tag>;
-using civil_day = civil_time<day_tag>;
-using civil_hour = civil_time<hour_tag>;
-using civil_minute = civil_time<minute_tag>;
-using civil_second = civil_time<second_tag>;
-
-////////////////////////////////////////////////////////////////////////
-
-// Relational operators that work with differently aligned objects.
-// Always compares all six fields.
-template <typename T1, typename T2>
-CONSTEXPR_F bool operator<(const civil_time<T1>& lhs,
-                           const civil_time<T2>& rhs) noexcept {
-  return (
-      lhs.year() < rhs.year() ||
-      (lhs.year() == rhs.year() &&
-       (lhs.month() < rhs.month() ||
-        (lhs.month() == rhs.month() &&
-         (lhs.day() < rhs.day() || (lhs.day() == rhs.day() &&
-                                    (lhs.hour() < rhs.hour() ||
-                                     (lhs.hour() == rhs.hour() &&
-                                      (lhs.minute() < rhs.minute() ||
-                                       (lhs.minute() == rhs.minute() &&
-                                        (lhs.second() < rhs.second())))))))))));
-}
-template <typename T1, typename T2>
-CONSTEXPR_F bool operator<=(const civil_time<T1>& lhs,
-                            const civil_time<T2>& rhs) noexcept {
-  return !(rhs < lhs);
-}
-template <typename T1, typename T2>
-CONSTEXPR_F bool operator>=(const civil_time<T1>& lhs,
-                            const civil_time<T2>& rhs) noexcept {
-  return !(lhs < rhs);
-}
-template <typename T1, typename T2>
-CONSTEXPR_F bool operator>(const civil_time<T1>& lhs,
-                           const civil_time<T2>& rhs) noexcept {
-  return rhs < lhs;
-}
-template <typename T1, typename T2>
-CONSTEXPR_F bool operator==(const civil_time<T1>& lhs,
-                            const civil_time<T2>& rhs) noexcept {
-  return lhs.year() == rhs.year() && lhs.month() == rhs.month() &&
-         lhs.day() == rhs.day() && lhs.hour() == rhs.hour() &&
-         lhs.minute() == rhs.minute() && lhs.second() == rhs.second();
-}
-template <typename T1, typename T2>
-CONSTEXPR_F bool operator!=(const civil_time<T1>& lhs,
-                            const civil_time<T2>& rhs) noexcept {
-  return !(lhs == rhs);
-}
-
-////////////////////////////////////////////////////////////////////////
-
-enum class weekday {
-  monday,
-  tuesday,
-  wednesday,
-  thursday,
-  friday,
-  saturday,
-  sunday,
-};
-
-CONSTEXPR_F weekday get_weekday(const civil_second& cs) noexcept {
-  CONSTEXPR_D weekday k_weekday_by_mon_off[13] = {
-      weekday::monday,    weekday::tuesday,  weekday::wednesday,
-      weekday::thursday,  weekday::friday,   weekday::saturday,
-      weekday::sunday,    weekday::monday,   weekday::tuesday,
-      weekday::wednesday, weekday::thursday, weekday::friday,
-      weekday::saturday,
-  };
-  CONSTEXPR_D int k_weekday_offsets[1 + 12] = {
-      -1, 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4,
-  };
-  year_t wd = 2400 + (cs.year() % 400) - (cs.month() < 3);
-  wd += wd / 4 - wd / 100 + wd / 400;
-  wd += k_weekday_offsets[cs.month()] + cs.day();
-  return k_weekday_by_mon_off[wd % 7 + 6];
-}
-
-////////////////////////////////////////////////////////////////////////
-
-CONSTEXPR_F civil_day next_weekday(civil_day cd, weekday wd) noexcept {
-  CONSTEXPR_D weekday k_weekdays_forw[14] = {
-      weekday::monday,    weekday::tuesday,  weekday::wednesday,
-      weekday::thursday,  weekday::friday,   weekday::saturday,
-      weekday::sunday,    weekday::monday,   weekday::tuesday,
-      weekday::wednesday, weekday::thursday, weekday::friday,
-      weekday::saturday,  weekday::sunday,
-  };
-  weekday base = get_weekday(cd);
-  for (int i = 0;; ++i) {
-    if (base == k_weekdays_forw[i]) {
-      for (int j = i + 1;; ++j) {
-        if (wd == k_weekdays_forw[j]) {
-          return cd + (j - i);
-        }
-      }
-    }
-  }
-}
-
-CONSTEXPR_F civil_day prev_weekday(civil_day cd, weekday wd) noexcept {
-  CONSTEXPR_D weekday k_weekdays_back[14] = {
-      weekday::sunday,   weekday::saturday,  weekday::friday,
-      weekday::thursday, weekday::wednesday, weekday::tuesday,
-      weekday::monday,   weekday::sunday,    weekday::saturday,
-      weekday::friday,   weekday::thursday,  weekday::wednesday,
-      weekday::tuesday,  weekday::monday,
-  };
-  weekday base = get_weekday(cd);
-  for (int i = 0;; ++i) {
-    if (base == k_weekdays_back[i]) {
-      for (int j = i + 1;; ++j) {
-        if (wd == k_weekdays_back[j]) {
-          return cd - (j - i);
-        }
-      }
-    }
-  }
-}
-
-CONSTEXPR_F int get_yearday(const civil_second& cs) noexcept {
-  CONSTEXPR_D int k_month_offsets[1 + 12] = {
-      -1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
-  };
-  const int feb29 = (cs.month() > 2 && impl::is_leap_year(cs.year()));
-  return k_month_offsets[cs.month()] + feb29 + cs.day();
-}
-
-////////////////////////////////////////////////////////////////////////
-
-std::ostream& operator<<(std::ostream& os, const civil_year& y);
-std::ostream& operator<<(std::ostream& os, const civil_month& m);
-std::ostream& operator<<(std::ostream& os, const civil_day& d);
-std::ostream& operator<<(std::ostream& os, const civil_hour& h);
-std::ostream& operator<<(std::ostream& os, const civil_minute& m);
-std::ostream& operator<<(std::ostream& os, const civil_second& s);
-std::ostream& operator<<(std::ostream& os, weekday wd);
-
-}  // namespace detail
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#undef CONSTEXPR_M
-#undef CONSTEXPR_F
-#undef CONSTEXPR_D
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_DETAIL_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/time_zone.h b/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/time_zone.h
deleted file mode 100644
index 5562a37bc807..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/time_zone.h
+++ /dev/null
@@ -1,386 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-// A library for translating between absolute times (represented by
-// std::chrono::time_points of the std::chrono::system_clock) and civil
-// times (represented by cctz::civil_second) using the rules defined by
-// a time zone (cctz::time_zone).
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_
-
-#include <chrono>
-#include <cstdint>
-#include <string>
-#include <utility>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// Convenience aliases. Not intended as public API points.
-template <typename D>
-using time_point = std::chrono::time_point<std::chrono::system_clock, D>;
-using seconds = std::chrono::duration<std::int_fast64_t>;
-using sys_seconds = seconds;  // Deprecated.  Use cctz::seconds instead.
-
-namespace detail {
-template <typename D>
-inline std::pair<time_point<seconds>, D> split_seconds(
-    const time_point<D>& tp) {
-  auto sec = std::chrono::time_point_cast<seconds>(tp);
-  auto sub = tp - sec;
-  if (sub.count() < 0) {
-    sec -= seconds(1);
-    sub += seconds(1);
-  }
-  return {sec, std::chrono::duration_cast<D>(sub)};
-}
-inline std::pair<time_point<seconds>, seconds> split_seconds(
-    const time_point<seconds>& tp) {
-  return {tp, seconds::zero()};
-}
-}  // namespace detail
-
-// cctz::time_zone is an opaque, small, value-type class representing a
-// geo-political region within which particular rules are used for mapping
-// between absolute and civil times. Time zones are named using the TZ
-// identifiers from the IANA Time Zone Database, such as "America/Los_Angeles"
-// or "Australia/Sydney". Time zones are created from factory functions such
-// as load_time_zone(). Note: strings like "PST" and "EDT" are not valid TZ
-// identifiers.
-//
-// Example:
-//   cctz::time_zone utc = cctz::utc_time_zone();
-//   cctz::time_zone pst = cctz::fixed_time_zone(std::chrono::hours(-8));
-//   cctz::time_zone loc = cctz::local_time_zone();
-//   cctz::time_zone lax;
-//   if (!cctz::load_time_zone("America/Los_Angeles", &lax)) { ... }
-//
-// See also:
-// - http://www.iana.org/time-zones
-// - https://en.wikipedia.org/wiki/Zoneinfo
-class time_zone {
- public:
-  time_zone() : time_zone(nullptr) {}  // Equivalent to UTC
-  time_zone(const time_zone&) = default;
-  time_zone& operator=(const time_zone&) = default;
-
-  std::string name() const;
-
-  // An absolute_lookup represents the civil time (cctz::civil_second) within
-  // this time_zone at the given absolute time (time_point). There are
-  // additionally a few other fields that may be useful when working with
-  // older APIs, such as std::tm.
-  //
-  // Example:
-  //   const cctz::time_zone tz = ...
-  //   const auto tp = std::chrono::system_clock::now();
-  //   const cctz::time_zone::absolute_lookup al = tz.lookup(tp);
-  struct absolute_lookup {
-    civil_second cs;
-    // Note: The following fields exist for backward compatibility with older
-    // APIs. Accessing these fields directly is a sign of imprudent logic in
-    // the calling code. Modern time-related code should only access this data
-    // indirectly by way of cctz::format().
-    int offset;        // civil seconds east of UTC
-    bool is_dst;       // is offset non-standard?
-    const char* abbr;  // time-zone abbreviation (e.g., "PST")
-  };
-  absolute_lookup lookup(const time_point<seconds>& tp) const;
-  template <typename D>
-  absolute_lookup lookup(const time_point<D>& tp) const {
-    return lookup(detail::split_seconds(tp).first);
-  }
-
-  // A civil_lookup represents the absolute time(s) (time_point) that
-  // correspond to the given civil time (cctz::civil_second) within this
-  // time_zone. Usually the given civil time represents a unique instant
-  // in time, in which case the conversion is unambiguous. However,
-  // within this time zone, the given civil time may be skipped (e.g.,
-  // during a positive UTC offset shift), or repeated (e.g., during a
-  // negative UTC offset shift). To account for these possibilities,
-  // civil_lookup is richer than just a single time_point.
-  //
-  // In all cases the civil_lookup::kind enum will indicate the nature
-  // of the given civil-time argument, and the pre, trans, and post
-  // members will give the absolute time answers using the pre-transition
-  // offset, the transition point itself, and the post-transition offset,
-  // respectively (all three times are equal if kind == UNIQUE). If any
-  // of these three absolute times is outside the representable range of a
-  // time_point<seconds> the field is set to its maximum/minimum value.
-  //
-  // Example:
-  //   cctz::time_zone lax;
-  //   if (!cctz::load_time_zone("America/Los_Angeles", &lax)) { ... }
-  //
-  //   // A unique civil time.
-  //   auto jan01 = lax.lookup(cctz::civil_second(2011, 1, 1, 0, 0, 0));
-  //   // jan01.kind == cctz::time_zone::civil_lookup::UNIQUE
-  //   // jan01.pre    is 2011/01/01 00:00:00 -0800
-  //   // jan01.trans  is 2011/01/01 00:00:00 -0800
-  //   // jan01.post   is 2011/01/01 00:00:00 -0800
-  //
-  //   // A Spring DST transition, when there is a gap in civil time.
-  //   auto mar13 = lax.lookup(cctz::civil_second(2011, 3, 13, 2, 15, 0));
-  //   // mar13.kind == cctz::time_zone::civil_lookup::SKIPPED
-  //   // mar13.pre   is 2011/03/13 03:15:00 -0700
-  //   // mar13.trans is 2011/03/13 03:00:00 -0700
-  //   // mar13.post  is 2011/03/13 01:15:00 -0800
-  //
-  //   // A Fall DST transition, when civil times are repeated.
-  //   auto nov06 = lax.lookup(cctz::civil_second(2011, 11, 6, 1, 15, 0));
-  //   // nov06.kind == cctz::time_zone::civil_lookup::REPEATED
-  //   // nov06.pre   is 2011/11/06 01:15:00 -0700
-  //   // nov06.trans is 2011/11/06 01:00:00 -0800
-  //   // nov06.post  is 2011/11/06 01:15:00 -0800
-  struct civil_lookup {
-    enum civil_kind {
-      UNIQUE,    // the civil time was singular (pre == trans == post)
-      SKIPPED,   // the civil time did not exist (pre >= trans > post)
-      REPEATED,  // the civil time was ambiguous (pre < trans <= post)
-    } kind;
-    time_point<seconds> pre;    // uses the pre-transition offset
-    time_point<seconds> trans;  // instant of civil-offset change
-    time_point<seconds> post;   // uses the post-transition offset
-  };
-  civil_lookup lookup(const civil_second& cs) const;
-
-  // Finds the time of the next/previous offset change in this time zone.
-  //
-  // By definition, next_transition(tp, &trans) returns false when tp has
-  // its maximum value, and prev_transition(tp, &trans) returns false
-  // when tp has its minimum value. If the zone has no transitions, the
-  // result will also be false no matter what the argument.
-  //
-  // Otherwise, when tp has its minimum value, next_transition(tp, &trans)
-  // returns true and sets trans to the first recorded transition. Chains
-  // of calls to next_transition()/prev_transition() will eventually return
-  // false, but it is unspecified exactly when next_transition(tp, &trans)
-  // jumps to false, or what time is set by prev_transition(tp, &trans) for
-  // a very distant tp.
-  //
-  // Note: Enumeration of time-zone transitions is for informational purposes
-  // only. Modern time-related code should not care about when offset changes
-  // occur.
-  //
-  // Example:
-  //   cctz::time_zone nyc;
-  //   if (!cctz::load_time_zone("America/New_York", &nyc)) { ... }
-  //   const auto now = std::chrono::system_clock::now();
-  //   auto tp = cctz::time_point<cctz::seconds>::min();
-  //   cctz::time_zone::civil_transition trans;
-  //   while (tp <= now && nyc.next_transition(tp, &trans)) {
-  //     // transition: trans.from -> trans.to
-  //     tp = nyc.lookup(trans.to).trans;
-  //   }
-  struct civil_transition {
-    civil_second from;  // the civil time we jump from
-    civil_second to;    // the civil time we jump to
-  };
-  bool next_transition(const time_point<seconds>& tp,
-                       civil_transition* trans) const;
-  template <typename D>
-  bool next_transition(const time_point<D>& tp, civil_transition* trans) const {
-    return next_transition(detail::split_seconds(tp).first, trans);
-  }
-  bool prev_transition(const time_point<seconds>& tp,
-                       civil_transition* trans) const;
-  template <typename D>
-  bool prev_transition(const time_point<D>& tp, civil_transition* trans) const {
-    return prev_transition(detail::split_seconds(tp).first, trans);
-  }
-
-  // version() and description() provide additional information about the
-  // time zone. The content of each of the returned strings is unspecified,
-  // however, when the IANA Time Zone Database is the underlying data source
-  // the version() string will be in the familar form (e.g, "2018e") or
-  // empty when unavailable.
-  //
-  // Note: These functions are for informational or testing purposes only.
-  std::string version() const;  // empty when unknown
-  std::string description() const;
-
-  // Relational operators.
-  friend bool operator==(time_zone lhs, time_zone rhs) {
-    return &lhs.effective_impl() == &rhs.effective_impl();
-  }
-  friend bool operator!=(time_zone lhs, time_zone rhs) { return !(lhs == rhs); }
-
-  template <typename H>
-  friend H AbslHashValue(H h, time_zone tz) {
-    return H::combine(std::move(h), &tz.effective_impl());
-  }
-
-  class Impl;
-
- private:
-  explicit time_zone(const Impl* impl) : impl_(impl) {}
-  const Impl& effective_impl() const;  // handles implicit UTC
-  const Impl* impl_;
-};
-
-// Loads the named time zone. May perform I/O on the initial load.
-// If the name is invalid, or some other kind of error occurs, returns
-// false and "*tz" is set to the UTC time zone.
-bool load_time_zone(const std::string& name, time_zone* tz);
-
-// Returns a time_zone representing UTC. Cannot fail.
-time_zone utc_time_zone();
-
-// Returns a time zone that is a fixed offset (seconds east) from UTC.
-// Note: If the absolute value of the offset is greater than 24 hours
-// you'll get UTC (i.e., zero offset) instead.
-time_zone fixed_time_zone(const seconds& offset);
-
-// Returns a time zone representing the local time zone. Falls back to UTC.
-// Note: local_time_zone.name() may only be something like "localtime".
-time_zone local_time_zone();
-
-// Returns the civil time (cctz::civil_second) within the given time zone at
-// the given absolute time (time_point). Since the additional fields provided
-// by the time_zone::absolute_lookup struct should rarely be needed in modern
-// code, this convert() function is simpler and should be preferred.
-template <typename D>
-inline civil_second convert(const time_point<D>& tp, const time_zone& tz) {
-  return tz.lookup(tp).cs;
-}
-
-// Returns the absolute time (time_point) that corresponds to the given civil
-// time within the given time zone. If the civil time is not unique (i.e., if
-// it was either repeated or non-existent), then the returned time_point is
-// the best estimate that preserves relative order. That is, this function
-// guarantees that if cs1 < cs2, then convert(cs1, tz) <= convert(cs2, tz).
-inline time_point<seconds> convert(const civil_second& cs,
-                                   const time_zone& tz) {
-  const time_zone::civil_lookup cl = tz.lookup(cs);
-  if (cl.kind == time_zone::civil_lookup::SKIPPED) return cl.trans;
-  return cl.pre;
-}
-
-namespace detail {
-using femtoseconds = std::chrono::duration<std::int_fast64_t, std::femto>;
-std::string format(const std::string&, const time_point<seconds>&,
-                   const femtoseconds&, const time_zone&);
-bool parse(const std::string&, const std::string&, const time_zone&,
-           time_point<seconds>*, femtoseconds*, std::string* err = nullptr);
-}  // namespace detail
-
-// Formats the given time_point in the given cctz::time_zone according to
-// the provided format string. Uses strftime()-like formatting options,
-// with the following extensions:
-//
-//   - %Ez  - RFC3339-compatible numeric UTC offset (+hh:mm or -hh:mm)
-//   - %E*z - Full-resolution numeric UTC offset (+hh:mm:ss or -hh:mm:ss)
-//   - %E#S - Seconds with # digits of fractional precision
-//   - %E*S - Seconds with full fractional precision (a literal '*')
-//   - %E#f - Fractional seconds with # digits of precision
-//   - %E*f - Fractional seconds with full precision (a literal '*')
-//   - %E4Y - Four-character years (-999 ... -001, 0000, 0001 ... 9999)
-//   - %ET  - The RFC3339 "date-time" separator "T"
-//
-// Note that %E0S behaves like %S, and %E0f produces no characters. In
-// contrast %E*f always produces at least one digit, which may be '0'.
-//
-// Note that %Y produces as many characters as it takes to fully render the
-// year. A year outside of [-999:9999] when formatted with %E4Y will produce
-// more than four characters, just like %Y.
-//
-// Tip: Format strings should include the UTC offset (e.g., %z, %Ez, or %E*z)
-// so that the resulting string uniquely identifies an absolute time.
-//
-// Example:
-//   cctz::time_zone lax;
-//   if (!cctz::load_time_zone("America/Los_Angeles", &lax)) { ... }
-//   auto tp = cctz::convert(cctz::civil_second(2013, 1, 2, 3, 4, 5), lax);
-//   std::string f = cctz::format("%H:%M:%S", tp, lax);  // "03:04:05"
-//   f = cctz::format("%H:%M:%E3S", tp, lax);            // "03:04:05.000"
-template <typename D>
-inline std::string format(const std::string& fmt, const time_point<D>& tp,
-                          const time_zone& tz) {
-  const auto p = detail::split_seconds(tp);
-  const auto n = std::chrono::duration_cast<detail::femtoseconds>(p.second);
-  return detail::format(fmt, p.first, n, tz);
-}
-
-// Parses an input string according to the provided format string and
-// returns the corresponding time_point. Uses strftime()-like formatting
-// options, with the same extensions as cctz::format(), but with the
-// exceptions that %E#S is interpreted as %E*S, and %E#f as %E*f. %Ez
-// and %E*z also accept the same inputs, which (along with %z) includes
-// 'z' and 'Z' as synonyms for +00:00.  %ET accepts either 'T' or 't'.
-//
-// %Y consumes as many numeric characters as it can, so the matching data
-// should always be terminated with a non-numeric. %E4Y always consumes
-// exactly four characters, including any sign.
-//
-// Unspecified fields are taken from the default date and time of ...
-//
-//   "1970-01-01 00:00:00.0 +0000"
-//
-// For example, parsing a string of "15:45" (%H:%M) will return a time_point
-// that represents "1970-01-01 15:45:00.0 +0000".
-//
-// Note that parse() returns time instants, so it makes most sense to parse
-// fully-specified date/time strings that include a UTC offset (%z, %Ez, or
-// %E*z).
-//
-// Note also that parse() only heeds the fields year, month, day, hour,
-// minute, (fractional) second, and UTC offset. Other fields, like weekday (%a
-// or %A), while parsed for syntactic validity, are ignored in the conversion.
-//
-// Date and time fields that are out-of-range will be treated as errors rather
-// than normalizing them like cctz::civil_second() would do. For example, it
-// is an error to parse the date "Oct 32, 2013" because 32 is out of range.
-//
-// A second of ":60" is normalized to ":00" of the following minute with
-// fractional seconds discarded. The following table shows how the given
-// seconds and subseconds will be parsed:
-//
-//   "59.x" -> 59.x  // exact
-//   "60.x" -> 00.0  // normalized
-//   "00.x" -> 00.x  // exact
-//
-// Errors are indicated by returning false.
-//
-// Example:
-//   const cctz::time_zone tz = ...
-//   std::chrono::system_clock::time_point tp;
-//   if (cctz::parse("%Y-%m-%d", "2015-10-09", tz, &tp)) {
-//     ...
-//   }
-template <typename D>
-inline bool parse(const std::string& fmt, const std::string& input,
-                  const time_zone& tz, time_point<D>* tpp) {
-  time_point<seconds> sec;
-  detail::femtoseconds fs;
-  const bool b = detail::parse(fmt, input, tz, &sec, &fs);
-  if (b) {
-    // TODO: Return false if unrepresentable as a time_point<D>.
-    *tpp = std::chrono::time_point_cast<D>(sec);
-    *tpp += std::chrono::duration_cast<D>(fs);
-  }
-  return b;
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h b/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h
deleted file mode 100644
index 012eb4ec30e0..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h
+++ /dev/null
@@ -1,102 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_
-#define ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_
-
-#include <cstddef>
-#include <functional>
-#include <memory>
-#include <string>
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// A stdio-like interface for providing zoneinfo data for a particular zone.
-class ZoneInfoSource {
- public:
-  virtual ~ZoneInfoSource();
-
-  virtual std::size_t Read(void* ptr, std::size_t size) = 0;  // like fread()
-  virtual int Skip(std::size_t offset) = 0;                   // like fseek()
-
-  // Until the zoneinfo data supports versioning information, we provide
-  // a way for a ZoneInfoSource to indicate it out-of-band.  The default
-  // implementation returns an empty string.
-  virtual std::string Version() const;
-};
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz_extension {
-
-// A function-pointer type for a factory that returns a ZoneInfoSource
-// given the name of a time zone and a fallback factory.  Returns null
-// when the data for the named zone cannot be found.
-using ZoneInfoSourceFactory =
-    std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> (*)(
-        const std::string&,
-        const std::function<std::unique_ptr<
-            absl::time_internal::cctz::ZoneInfoSource>(const std::string&)>&);
-
-// The user can control the mapping of zone names to zoneinfo data by
-// providing a definition for cctz_extension::zone_info_source_factory.
-// For example, given functions my_factory() and my_other_factory() that
-// can return a ZoneInfoSource for a named zone, we could inject them into
-// cctz::load_time_zone() with:
-//
-//   namespace cctz_extension {
-//   namespace {
-//   std::unique_ptr<cctz::ZoneInfoSource> CustomFactory(
-//       const std::string& name,
-//       const std::function<std::unique_ptr<cctz::ZoneInfoSource>(
-//           const std::string& name)>& fallback_factory) {
-//     if (auto zip = my_factory(name)) return zip;
-//     if (auto zip = fallback_factory(name)) return zip;
-//     if (auto zip = my_other_factory(name)) return zip;
-//     return nullptr;
-//   }
-//   }  // namespace
-//   ZoneInfoSourceFactory zone_info_source_factory = CustomFactory;
-//   }  // namespace cctz_extension
-//
-// This might be used, say, to use zoneinfo data embedded in the program,
-// or read from a (possibly compressed) file archive, or both.
-//
-// cctz_extension::zone_info_source_factory() will be called:
-//   (1) from the same thread as the cctz::load_time_zone() call,
-//   (2) only once for any zone name, and
-//   (3) serially (i.e., no concurrent execution).
-//
-// The fallback factory obtains zoneinfo data by reading files in ${TZDIR},
-// and it is used automatically when no zone_info_source_factory definition
-// is linked into the program.
-extern ZoneInfoSourceFactory zone_info_source_factory;
-
-}  // namespace cctz_extension
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/cctz_benchmark.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/cctz_benchmark.cc
deleted file mode 100644
index 4e39188ff3e6..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/cctz_benchmark.cc
+++ /dev/null
@@ -1,1030 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include <algorithm>
-#include <cassert>
-#include <chrono>
-#include <ctime>
-#include <random>
-#include <string>
-#include <vector>
-
-#include "benchmark/benchmark.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-#include "time_zone_impl.h"
-
-namespace {
-
-namespace cctz = absl::time_internal::cctz;
-
-void BM_Difference_Days(benchmark::State& state) {
-  const cctz::civil_day c(2014, 8, 22);
-  const cctz::civil_day epoch(1970, 1, 1);
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(c - epoch);
-  }
-}
-BENCHMARK(BM_Difference_Days);
-
-void BM_Step_Days(benchmark::State& state) {
-  const cctz::civil_day kStart(2014, 8, 22);
-  cctz::civil_day c = kStart;
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(++c);
-  }
-}
-BENCHMARK(BM_Step_Days);
-
-void BM_GetWeekday(benchmark::State& state) {
-  const cctz::civil_day c(2014, 8, 22);
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::get_weekday(c));
-  }
-}
-BENCHMARK(BM_GetWeekday);
-
-void BM_NextWeekday(benchmark::State& state) {
-  const cctz::civil_day kStart(2014, 8, 22);
-  const cctz::civil_day kDays[7] = {
-      kStart + 0, kStart + 1, kStart + 2, kStart + 3,
-      kStart + 4, kStart + 5, kStart + 6,
-  };
-  const cctz::weekday kWeekdays[7] = {
-      cctz::weekday::monday,   cctz::weekday::tuesday, cctz::weekday::wednesday,
-      cctz::weekday::thursday, cctz::weekday::friday,  cctz::weekday::saturday,
-      cctz::weekday::sunday,
-  };
-  while (state.KeepRunningBatch(7 * 7)) {
-    for (const auto from : kDays) {
-      for (const auto to : kWeekdays) {
-        benchmark::DoNotOptimize(cctz::next_weekday(from, to));
-      }
-    }
-  }
-}
-BENCHMARK(BM_NextWeekday);
-
-void BM_PrevWeekday(benchmark::State& state) {
-  const cctz::civil_day kStart(2014, 8, 22);
-  const cctz::civil_day kDays[7] = {
-      kStart + 0, kStart + 1, kStart + 2, kStart + 3,
-      kStart + 4, kStart + 5, kStart + 6,
-  };
-  const cctz::weekday kWeekdays[7] = {
-      cctz::weekday::monday,   cctz::weekday::tuesday, cctz::weekday::wednesday,
-      cctz::weekday::thursday, cctz::weekday::friday,  cctz::weekday::saturday,
-      cctz::weekday::sunday,
-  };
-  while (state.KeepRunningBatch(7 * 7)) {
-    for (const auto from : kDays) {
-      for (const auto to : kWeekdays) {
-        benchmark::DoNotOptimize(cctz::prev_weekday(from, to));
-      }
-    }
-  }
-}
-BENCHMARK(BM_PrevWeekday);
-
-const char RFC3339_full[] = "%Y-%m-%d%ET%H:%M:%E*S%Ez";
-const char RFC3339_sec[] = "%Y-%m-%d%ET%H:%M:%S%Ez";
-
-const char RFC1123_full[] = "%a, %d %b %Y %H:%M:%S %z";
-const char RFC1123_no_wday[] = "%d %b %Y %H:%M:%S %z";
-
-// A list of known time-zone names.
-// TODO: Refactor with src/time_zone_lookup_test.cc.
-const char* const kTimeZoneNames[] = {"Africa/Abidjan",
-                                      "Africa/Accra",
-                                      "Africa/Addis_Ababa",
-                                      "Africa/Algiers",
-                                      "Africa/Asmara",
-                                      "Africa/Asmera",
-                                      "Africa/Bamako",
-                                      "Africa/Bangui",
-                                      "Africa/Banjul",
-                                      "Africa/Bissau",
-                                      "Africa/Blantyre",
-                                      "Africa/Brazzaville",
-                                      "Africa/Bujumbura",
-                                      "Africa/Cairo",
-                                      "Africa/Casablanca",
-                                      "Africa/Ceuta",
-                                      "Africa/Conakry",
-                                      "Africa/Dakar",
-                                      "Africa/Dar_es_Salaam",
-                                      "Africa/Djibouti",
-                                      "Africa/Douala",
-                                      "Africa/El_Aaiun",
-                                      "Africa/Freetown",
-                                      "Africa/Gaborone",
-                                      "Africa/Harare",
-                                      "Africa/Johannesburg",
-                                      "Africa/Juba",
-                                      "Africa/Kampala",
-                                      "Africa/Khartoum",
-                                      "Africa/Kigali",
-                                      "Africa/Kinshasa",
-                                      "Africa/Lagos",
-                                      "Africa/Libreville",
-                                      "Africa/Lome",
-                                      "Africa/Luanda",
-                                      "Africa/Lubumbashi",
-                                      "Africa/Lusaka",
-                                      "Africa/Malabo",
-                                      "Africa/Maputo",
-                                      "Africa/Maseru",
-                                      "Africa/Mbabane",
-                                      "Africa/Mogadishu",
-                                      "Africa/Monrovia",
-                                      "Africa/Nairobi",
-                                      "Africa/Ndjamena",
-                                      "Africa/Niamey",
-                                      "Africa/Nouakchott",
-                                      "Africa/Ouagadougou",
-                                      "Africa/Porto-Novo",
-                                      "Africa/Sao_Tome",
-                                      "Africa/Timbuktu",
-                                      "Africa/Tripoli",
-                                      "Africa/Tunis",
-                                      "Africa/Windhoek",
-                                      "America/Adak",
-                                      "America/Anchorage",
-                                      "America/Anguilla",
-                                      "America/Antigua",
-                                      "America/Araguaina",
-                                      "America/Argentina/Buenos_Aires",
-                                      "America/Argentina/Catamarca",
-                                      "America/Argentina/ComodRivadavia",
-                                      "America/Argentina/Cordoba",
-                                      "America/Argentina/Jujuy",
-                                      "America/Argentina/La_Rioja",
-                                      "America/Argentina/Mendoza",
-                                      "America/Argentina/Rio_Gallegos",
-                                      "America/Argentina/Salta",
-                                      "America/Argentina/San_Juan",
-                                      "America/Argentina/San_Luis",
-                                      "America/Argentina/Tucuman",
-                                      "America/Argentina/Ushuaia",
-                                      "America/Aruba",
-                                      "America/Asuncion",
-                                      "America/Atikokan",
-                                      "America/Atka",
-                                      "America/Bahia",
-                                      "America/Bahia_Banderas",
-                                      "America/Barbados",
-                                      "America/Belem",
-                                      "America/Belize",
-                                      "America/Blanc-Sablon",
-                                      "America/Boa_Vista",
-                                      "America/Bogota",
-                                      "America/Boise",
-                                      "America/Buenos_Aires",
-                                      "America/Cambridge_Bay",
-                                      "America/Campo_Grande",
-                                      "America/Cancun",
-                                      "America/Caracas",
-                                      "America/Catamarca",
-                                      "America/Cayenne",
-                                      "America/Cayman",
-                                      "America/Chicago",
-                                      "America/Chihuahua",
-                                      "America/Coral_Harbour",
-                                      "America/Cordoba",
-                                      "America/Costa_Rica",
-                                      "America/Creston",
-                                      "America/Cuiaba",
-                                      "America/Curacao",
-                                      "America/Danmarkshavn",
-                                      "America/Dawson",
-                                      "America/Dawson_Creek",
-                                      "America/Denver",
-                                      "America/Detroit",
-                                      "America/Dominica",
-                                      "America/Edmonton",
-                                      "America/Eirunepe",
-                                      "America/El_Salvador",
-                                      "America/Ensenada",
-                                      "America/Fort_Nelson",
-                                      "America/Fort_Wayne",
-                                      "America/Fortaleza",
-                                      "America/Glace_Bay",
-                                      "America/Godthab",
-                                      "America/Goose_Bay",
-                                      "America/Grand_Turk",
-                                      "America/Grenada",
-                                      "America/Guadeloupe",
-                                      "America/Guatemala",
-                                      "America/Guayaquil",
-                                      "America/Guyana",
-                                      "America/Halifax",
-                                      "America/Havana",
-                                      "America/Hermosillo",
-                                      "America/Indiana/Indianapolis",
-                                      "America/Indiana/Knox",
-                                      "America/Indiana/Marengo",
-                                      "America/Indiana/Petersburg",
-                                      "America/Indiana/Tell_City",
-                                      "America/Indiana/Vevay",
-                                      "America/Indiana/Vincennes",
-                                      "America/Indiana/Winamac",
-                                      "America/Indianapolis",
-                                      "America/Inuvik",
-                                      "America/Iqaluit",
-                                      "America/Jamaica",
-                                      "America/Jujuy",
-                                      "America/Juneau",
-                                      "America/Kentucky/Louisville",
-                                      "America/Kentucky/Monticello",
-                                      "America/Knox_IN",
-                                      "America/Kralendijk",
-                                      "America/La_Paz",
-                                      "America/Lima",
-                                      "America/Los_Angeles",
-                                      "America/Louisville",
-                                      "America/Lower_Princes",
-                                      "America/Maceio",
-                                      "America/Managua",
-                                      "America/Manaus",
-                                      "America/Marigot",
-                                      "America/Martinique",
-                                      "America/Matamoros",
-                                      "America/Mazatlan",
-                                      "America/Mendoza",
-                                      "America/Menominee",
-                                      "America/Merida",
-                                      "America/Metlakatla",
-                                      "America/Mexico_City",
-                                      "America/Miquelon",
-                                      "America/Moncton",
-                                      "America/Monterrey",
-                                      "America/Montevideo",
-                                      "America/Montreal",
-                                      "America/Montserrat",
-                                      "America/Nassau",
-                                      "America/New_York",
-                                      "America/Nipigon",
-                                      "America/Nome",
-                                      "America/Noronha",
-                                      "America/North_Dakota/Beulah",
-                                      "America/North_Dakota/Center",
-                                      "America/North_Dakota/New_Salem",
-                                      "America/Nuuk",
-                                      "America/Ojinaga",
-                                      "America/Panama",
-                                      "America/Pangnirtung",
-                                      "America/Paramaribo",
-                                      "America/Phoenix",
-                                      "America/Port-au-Prince",
-                                      "America/Port_of_Spain",
-                                      "America/Porto_Acre",
-                                      "America/Porto_Velho",
-                                      "America/Puerto_Rico",
-                                      "America/Punta_Arenas",
-                                      "America/Rainy_River",
-                                      "America/Rankin_Inlet",
-                                      "America/Recife",
-                                      "America/Regina",
-                                      "America/Resolute",
-                                      "America/Rio_Branco",
-                                      "America/Rosario",
-                                      "America/Santa_Isabel",
-                                      "America/Santarem",
-                                      "America/Santiago",
-                                      "America/Santo_Domingo",
-                                      "America/Sao_Paulo",
-                                      "America/Scoresbysund",
-                                      "America/Shiprock",
-                                      "America/Sitka",
-                                      "America/St_Barthelemy",
-                                      "America/St_Johns",
-                                      "America/St_Kitts",
-                                      "America/St_Lucia",
-                                      "America/St_Thomas",
-                                      "America/St_Vincent",
-                                      "America/Swift_Current",
-                                      "America/Tegucigalpa",
-                                      "America/Thule",
-                                      "America/Thunder_Bay",
-                                      "America/Tijuana",
-                                      "America/Toronto",
-                                      "America/Tortola",
-                                      "America/Vancouver",
-                                      "America/Virgin",
-                                      "America/Whitehorse",
-                                      "America/Winnipeg",
-                                      "America/Yakutat",
-                                      "America/Yellowknife",
-                                      "Antarctica/Casey",
-                                      "Antarctica/Davis",
-                                      "Antarctica/DumontDUrville",
-                                      "Antarctica/Macquarie",
-                                      "Antarctica/Mawson",
-                                      "Antarctica/McMurdo",
-                                      "Antarctica/Palmer",
-                                      "Antarctica/Rothera",
-                                      "Antarctica/South_Pole",
-                                      "Antarctica/Syowa",
-                                      "Antarctica/Troll",
-                                      "Antarctica/Vostok",
-                                      "Arctic/Longyearbyen",
-                                      "Asia/Aden",
-                                      "Asia/Almaty",
-                                      "Asia/Amman",
-                                      "Asia/Anadyr",
-                                      "Asia/Aqtau",
-                                      "Asia/Aqtobe",
-                                      "Asia/Ashgabat",
-                                      "Asia/Ashkhabad",
-                                      "Asia/Atyrau",
-                                      "Asia/Baghdad",
-                                      "Asia/Bahrain",
-                                      "Asia/Baku",
-                                      "Asia/Bangkok",
-                                      "Asia/Barnaul",
-                                      "Asia/Beirut",
-                                      "Asia/Bishkek",
-                                      "Asia/Brunei",
-                                      "Asia/Calcutta",
-                                      "Asia/Chita",
-                                      "Asia/Choibalsan",
-                                      "Asia/Chongqing",
-                                      "Asia/Chungking",
-                                      "Asia/Colombo",
-                                      "Asia/Dacca",
-                                      "Asia/Damascus",
-                                      "Asia/Dhaka",
-                                      "Asia/Dili",
-                                      "Asia/Dubai",
-                                      "Asia/Dushanbe",
-                                      "Asia/Famagusta",
-                                      "Asia/Gaza",
-                                      "Asia/Harbin",
-                                      "Asia/Hebron",
-                                      "Asia/Ho_Chi_Minh",
-                                      "Asia/Hong_Kong",
-                                      "Asia/Hovd",
-                                      "Asia/Irkutsk",
-                                      "Asia/Istanbul",
-                                      "Asia/Jakarta",
-                                      "Asia/Jayapura",
-                                      "Asia/Jerusalem",
-                                      "Asia/Kabul",
-                                      "Asia/Kamchatka",
-                                      "Asia/Karachi",
-                                      "Asia/Kashgar",
-                                      "Asia/Kathmandu",
-                                      "Asia/Katmandu",
-                                      "Asia/Khandyga",
-                                      "Asia/Kolkata",
-                                      "Asia/Krasnoyarsk",
-                                      "Asia/Kuala_Lumpur",
-                                      "Asia/Kuching",
-                                      "Asia/Kuwait",
-                                      "Asia/Macao",
-                                      "Asia/Macau",
-                                      "Asia/Magadan",
-                                      "Asia/Makassar",
-                                      "Asia/Manila",
-                                      "Asia/Muscat",
-                                      "Asia/Nicosia",
-                                      "Asia/Novokuznetsk",
-                                      "Asia/Novosibirsk",
-                                      "Asia/Omsk",
-                                      "Asia/Oral",
-                                      "Asia/Phnom_Penh",
-                                      "Asia/Pontianak",
-                                      "Asia/Pyongyang",
-                                      "Asia/Qatar",
-                                      "Asia/Qostanay",
-                                      "Asia/Qyzylorda",
-                                      "Asia/Rangoon",
-                                      "Asia/Riyadh",
-                                      "Asia/Saigon",
-                                      "Asia/Sakhalin",
-                                      "Asia/Samarkand",
-                                      "Asia/Seoul",
-                                      "Asia/Shanghai",
-                                      "Asia/Singapore",
-                                      "Asia/Srednekolymsk",
-                                      "Asia/Taipei",
-                                      "Asia/Tashkent",
-                                      "Asia/Tbilisi",
-                                      "Asia/Tehran",
-                                      "Asia/Tel_Aviv",
-                                      "Asia/Thimbu",
-                                      "Asia/Thimphu",
-                                      "Asia/Tokyo",
-                                      "Asia/Tomsk",
-                                      "Asia/Ujung_Pandang",
-                                      "Asia/Ulaanbaatar",
-                                      "Asia/Ulan_Bator",
-                                      "Asia/Urumqi",
-                                      "Asia/Ust-Nera",
-                                      "Asia/Vientiane",
-                                      "Asia/Vladivostok",
-                                      "Asia/Yakutsk",
-                                      "Asia/Yangon",
-                                      "Asia/Yekaterinburg",
-                                      "Asia/Yerevan",
-                                      "Atlantic/Azores",
-                                      "Atlantic/Bermuda",
-                                      "Atlantic/Canary",
-                                      "Atlantic/Cape_Verde",
-                                      "Atlantic/Faeroe",
-                                      "Atlantic/Faroe",
-                                      "Atlantic/Jan_Mayen",
-                                      "Atlantic/Madeira",
-                                      "Atlantic/Reykjavik",
-                                      "Atlantic/South_Georgia",
-                                      "Atlantic/St_Helena",
-                                      "Atlantic/Stanley",
-                                      "Australia/ACT",
-                                      "Australia/Adelaide",
-                                      "Australia/Brisbane",
-                                      "Australia/Broken_Hill",
-                                      "Australia/Canberra",
-                                      "Australia/Currie",
-                                      "Australia/Darwin",
-                                      "Australia/Eucla",
-                                      "Australia/Hobart",
-                                      "Australia/LHI",
-                                      "Australia/Lindeman",
-                                      "Australia/Lord_Howe",
-                                      "Australia/Melbourne",
-                                      "Australia/NSW",
-                                      "Australia/North",
-                                      "Australia/Perth",
-                                      "Australia/Queensland",
-                                      "Australia/South",
-                                      "Australia/Sydney",
-                                      "Australia/Tasmania",
-                                      "Australia/Victoria",
-                                      "Australia/West",
-                                      "Australia/Yancowinna",
-                                      "Brazil/Acre",
-                                      "Brazil/DeNoronha",
-                                      "Brazil/East",
-                                      "Brazil/West",
-                                      "CET",
-                                      "CST6CDT",
-                                      "Canada/Atlantic",
-                                      "Canada/Central",
-                                      "Canada/Eastern",
-                                      "Canada/Mountain",
-                                      "Canada/Newfoundland",
-                                      "Canada/Pacific",
-                                      "Canada/Saskatchewan",
-                                      "Canada/Yukon",
-                                      "Chile/Continental",
-                                      "Chile/EasterIsland",
-                                      "Cuba",
-                                      "EET",
-                                      "EST",
-                                      "EST5EDT",
-                                      "Egypt",
-                                      "Eire",
-                                      "Etc/GMT",
-                                      "Etc/GMT+0",
-                                      "Etc/GMT+1",
-                                      "Etc/GMT+10",
-                                      "Etc/GMT+11",
-                                      "Etc/GMT+12",
-                                      "Etc/GMT+2",
-                                      "Etc/GMT+3",
-                                      "Etc/GMT+4",
-                                      "Etc/GMT+5",
-                                      "Etc/GMT+6",
-                                      "Etc/GMT+7",
-                                      "Etc/GMT+8",
-                                      "Etc/GMT+9",
-                                      "Etc/GMT-0",
-                                      "Etc/GMT-1",
-                                      "Etc/GMT-10",
-                                      "Etc/GMT-11",
-                                      "Etc/GMT-12",
-                                      "Etc/GMT-13",
-                                      "Etc/GMT-14",
-                                      "Etc/GMT-2",
-                                      "Etc/GMT-3",
-                                      "Etc/GMT-4",
-                                      "Etc/GMT-5",
-                                      "Etc/GMT-6",
-                                      "Etc/GMT-7",
-                                      "Etc/GMT-8",
-                                      "Etc/GMT-9",
-                                      "Etc/GMT0",
-                                      "Etc/Greenwich",
-                                      "Etc/UCT",
-                                      "Etc/UTC",
-                                      "Etc/Universal",
-                                      "Etc/Zulu",
-                                      "Europe/Amsterdam",
-                                      "Europe/Andorra",
-                                      "Europe/Astrakhan",
-                                      "Europe/Athens",
-                                      "Europe/Belfast",
-                                      "Europe/Belgrade",
-                                      "Europe/Berlin",
-                                      "Europe/Bratislava",
-                                      "Europe/Brussels",
-                                      "Europe/Bucharest",
-                                      "Europe/Budapest",
-                                      "Europe/Busingen",
-                                      "Europe/Chisinau",
-                                      "Europe/Copenhagen",
-                                      "Europe/Dublin",
-                                      "Europe/Gibraltar",
-                                      "Europe/Guernsey",
-                                      "Europe/Helsinki",
-                                      "Europe/Isle_of_Man",
-                                      "Europe/Istanbul",
-                                      "Europe/Jersey",
-                                      "Europe/Kaliningrad",
-                                      "Europe/Kiev",
-                                      "Europe/Kirov",
-                                      "Europe/Lisbon",
-                                      "Europe/Ljubljana",
-                                      "Europe/London",
-                                      "Europe/Luxembourg",
-                                      "Europe/Madrid",
-                                      "Europe/Malta",
-                                      "Europe/Mariehamn",
-                                      "Europe/Minsk",
-                                      "Europe/Monaco",
-                                      "Europe/Moscow",
-                                      "Europe/Nicosia",
-                                      "Europe/Oslo",
-                                      "Europe/Paris",
-                                      "Europe/Podgorica",
-                                      "Europe/Prague",
-                                      "Europe/Riga",
-                                      "Europe/Rome",
-                                      "Europe/Samara",
-                                      "Europe/San_Marino",
-                                      "Europe/Sarajevo",
-                                      "Europe/Saratov",
-                                      "Europe/Simferopol",
-                                      "Europe/Skopje",
-                                      "Europe/Sofia",
-                                      "Europe/Stockholm",
-                                      "Europe/Tallinn",
-                                      "Europe/Tirane",
-                                      "Europe/Tiraspol",
-                                      "Europe/Ulyanovsk",
-                                      "Europe/Uzhgorod",
-                                      "Europe/Vaduz",
-                                      "Europe/Vatican",
-                                      "Europe/Vienna",
-                                      "Europe/Vilnius",
-                                      "Europe/Volgograd",
-                                      "Europe/Warsaw",
-                                      "Europe/Zagreb",
-                                      "Europe/Zaporozhye",
-                                      "Europe/Zurich",
-                                      "GB",
-                                      "GB-Eire",
-                                      "GMT",
-                                      "GMT+0",
-                                      "GMT-0",
-                                      "GMT0",
-                                      "Greenwich",
-                                      "HST",
-                                      "Hongkong",
-                                      "Iceland",
-                                      "Indian/Antananarivo",
-                                      "Indian/Chagos",
-                                      "Indian/Christmas",
-                                      "Indian/Cocos",
-                                      "Indian/Comoro",
-                                      "Indian/Kerguelen",
-                                      "Indian/Mahe",
-                                      "Indian/Maldives",
-                                      "Indian/Mauritius",
-                                      "Indian/Mayotte",
-                                      "Indian/Reunion",
-                                      "Iran",
-                                      "Israel",
-                                      "Jamaica",
-                                      "Japan",
-                                      "Kwajalein",
-                                      "Libya",
-                                      "MET",
-                                      "MST",
-                                      "MST7MDT",
-                                      "Mexico/BajaNorte",
-                                      "Mexico/BajaSur",
-                                      "Mexico/General",
-                                      "NZ",
-                                      "NZ-CHAT",
-                                      "Navajo",
-                                      "PRC",
-                                      "PST8PDT",
-                                      "Pacific/Apia",
-                                      "Pacific/Auckland",
-                                      "Pacific/Bougainville",
-                                      "Pacific/Chatham",
-                                      "Pacific/Chuuk",
-                                      "Pacific/Easter",
-                                      "Pacific/Efate",
-                                      "Pacific/Enderbury",
-                                      "Pacific/Fakaofo",
-                                      "Pacific/Fiji",
-                                      "Pacific/Funafuti",
-                                      "Pacific/Galapagos",
-                                      "Pacific/Gambier",
-                                      "Pacific/Guadalcanal",
-                                      "Pacific/Guam",
-                                      "Pacific/Honolulu",
-                                      "Pacific/Johnston",
-                                      "Pacific/Kiritimati",
-                                      "Pacific/Kosrae",
-                                      "Pacific/Kwajalein",
-                                      "Pacific/Majuro",
-                                      "Pacific/Marquesas",
-                                      "Pacific/Midway",
-                                      "Pacific/Nauru",
-                                      "Pacific/Niue",
-                                      "Pacific/Norfolk",
-                                      "Pacific/Noumea",
-                                      "Pacific/Pago_Pago",
-                                      "Pacific/Palau",
-                                      "Pacific/Pitcairn",
-                                      "Pacific/Pohnpei",
-                                      "Pacific/Ponape",
-                                      "Pacific/Port_Moresby",
-                                      "Pacific/Rarotonga",
-                                      "Pacific/Saipan",
-                                      "Pacific/Samoa",
-                                      "Pacific/Tahiti",
-                                      "Pacific/Tarawa",
-                                      "Pacific/Tongatapu",
-                                      "Pacific/Truk",
-                                      "Pacific/Wake",
-                                      "Pacific/Wallis",
-                                      "Pacific/Yap",
-                                      "Poland",
-                                      "Portugal",
-                                      "ROC",
-                                      "ROK",
-                                      "Singapore",
-                                      "Turkey",
-                                      "UCT",
-                                      "US/Alaska",
-                                      "US/Aleutian",
-                                      "US/Arizona",
-                                      "US/Central",
-                                      "US/East-Indiana",
-                                      "US/Eastern",
-                                      "US/Hawaii",
-                                      "US/Indiana-Starke",
-                                      "US/Michigan",
-                                      "US/Mountain",
-                                      "US/Pacific",
-                                      "US/Samoa",
-                                      "UTC",
-                                      "Universal",
-                                      "W-SU",
-                                      "WET",
-                                      "Zulu",
-                                      nullptr};
-
-std::vector<std::string> AllTimeZoneNames() {
-  std::vector<std::string> names;
-  for (const char* const* namep = kTimeZoneNames; *namep != nullptr; ++namep) {
-    names.push_back(std::string("file:") + *namep);
-  }
-  assert(!names.empty());
-
-  std::mt19937 urbg(42);  // a UniformRandomBitGenerator with fixed seed
-  std::shuffle(names.begin(), names.end(), urbg);
-  return names;
-}
-
-cctz::time_zone TestTimeZone() {
-  cctz::time_zone tz;
-  cctz::load_time_zone("America/Los_Angeles", &tz);
-  return tz;
-}
-
-void BM_Zone_LoadUTCTimeZoneFirst(benchmark::State& state) {
-  cctz::time_zone tz;
-  cctz::load_time_zone("UTC", &tz);  // in case we're first
-  cctz::time_zone::Impl::ClearTimeZoneMapTestOnly();
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::load_time_zone("UTC", &tz));
-  }
-}
-BENCHMARK(BM_Zone_LoadUTCTimeZoneFirst);
-
-void BM_Zone_LoadUTCTimeZoneLast(benchmark::State& state) {
-  cctz::time_zone tz;
-  for (const auto& name : AllTimeZoneNames()) {
-    cctz::load_time_zone(name, &tz);  // prime cache
-  }
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::load_time_zone("UTC", &tz));
-  }
-}
-BENCHMARK(BM_Zone_LoadUTCTimeZoneLast);
-
-void BM_Zone_LoadTimeZoneFirst(benchmark::State& state) {
-  cctz::time_zone tz = cctz::utc_time_zone();  // in case we're first
-  const std::string name = "file:America/Los_Angeles";
-  while (state.KeepRunning()) {
-    state.PauseTiming();
-    cctz::time_zone::Impl::ClearTimeZoneMapTestOnly();
-    state.ResumeTiming();
-    benchmark::DoNotOptimize(cctz::load_time_zone(name, &tz));
-  }
-}
-BENCHMARK(BM_Zone_LoadTimeZoneFirst);
-
-void BM_Zone_LoadTimeZoneCached(benchmark::State& state) {
-  cctz::time_zone tz = cctz::utc_time_zone();  // in case we're first
-  cctz::time_zone::Impl::ClearTimeZoneMapTestOnly();
-  const std::string name = "file:America/Los_Angeles";
-  cctz::load_time_zone(name, &tz);  // prime cache
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::load_time_zone(name, &tz));
-  }
-}
-BENCHMARK(BM_Zone_LoadTimeZoneCached);
-
-void BM_Zone_LoadLocalTimeZoneCached(benchmark::State& state) {
-  cctz::utc_time_zone();  // in case we're first
-  cctz::time_zone::Impl::ClearTimeZoneMapTestOnly();
-  cctz::local_time_zone();  // prime cache
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::local_time_zone());
-  }
-}
-BENCHMARK(BM_Zone_LoadLocalTimeZoneCached);
-
-void BM_Zone_LoadAllTimeZonesFirst(benchmark::State& state) {
-  cctz::time_zone tz;
-  const std::vector<std::string> names = AllTimeZoneNames();
-  for (auto index = names.size(); state.KeepRunning(); ++index) {
-    if (index == names.size()) {
-      index = 0;
-    }
-    if (index == 0) {
-      state.PauseTiming();
-      cctz::time_zone::Impl::ClearTimeZoneMapTestOnly();
-      state.ResumeTiming();
-    }
-    benchmark::DoNotOptimize(cctz::load_time_zone(names[index], &tz));
-  }
-}
-BENCHMARK(BM_Zone_LoadAllTimeZonesFirst);
-
-void BM_Zone_LoadAllTimeZonesCached(benchmark::State& state) {
-  cctz::time_zone tz;
-  const std::vector<std::string> names = AllTimeZoneNames();
-  for (const auto& name : names) {
-    cctz::load_time_zone(name, &tz);  // prime cache
-  }
-  for (auto index = names.size(); state.KeepRunning(); ++index) {
-    if (index == names.size()) {
-      index = 0;
-    }
-    benchmark::DoNotOptimize(cctz::load_time_zone(names[index], &tz));
-  }
-}
-BENCHMARK(BM_Zone_LoadAllTimeZonesCached);
-
-void BM_Zone_TimeZoneEqualityImplicit(benchmark::State& state) {
-  cctz::time_zone tz;  // implicit UTC
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(tz == tz);
-  }
-}
-BENCHMARK(BM_Zone_TimeZoneEqualityImplicit);
-
-void BM_Zone_TimeZoneEqualityExplicit(benchmark::State& state) {
-  cctz::time_zone tz = cctz::utc_time_zone();  // explicit UTC
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(tz == tz);
-  }
-}
-BENCHMARK(BM_Zone_TimeZoneEqualityExplicit);
-
-void BM_Zone_UTCTimeZone(benchmark::State& state) {
-  cctz::time_zone tz;
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::utc_time_zone());
-  }
-}
-BENCHMARK(BM_Zone_UTCTimeZone);
-
-// In each "ToCivil" benchmark we switch between two instants separated
-// by at least one transition in order to defeat any internal caching of
-// previous results (e.g., see local_time_hint_).
-//
-// The "UTC" variants use UTC instead of the Google/local time zone.
-
-void BM_Time_ToCivil_CCTZ(benchmark::State& state) {
-  const cctz::time_zone tz = TestTimeZone();
-  std::chrono::system_clock::time_point tp =
-      std::chrono::system_clock::from_time_t(1384569027);
-  std::chrono::system_clock::time_point tp2 =
-      std::chrono::system_clock::from_time_t(1418962578);
-  while (state.KeepRunning()) {
-    std::swap(tp, tp2);
-    tp += std::chrono::seconds(1);
-    benchmark::DoNotOptimize(cctz::convert(tp, tz));
-  }
-}
-BENCHMARK(BM_Time_ToCivil_CCTZ);
-
-void BM_Time_ToCivil_Libc(benchmark::State& state) {
-  // No timezone support, so just use localtime.
-  time_t t = 1384569027;
-  time_t t2 = 1418962578;
-  struct tm tm;
-  while (state.KeepRunning()) {
-    std::swap(t, t2);
-    t += 1;
-#if defined(_WIN32) || defined(_WIN64)
-    benchmark::DoNotOptimize(localtime_s(&tm, &t));
-#else
-    benchmark::DoNotOptimize(localtime_r(&t, &tm));
-#endif
-  }
-}
-BENCHMARK(BM_Time_ToCivil_Libc);
-
-void BM_Time_ToCivilUTC_CCTZ(benchmark::State& state) {
-  const cctz::time_zone tz = cctz::utc_time_zone();
-  std::chrono::system_clock::time_point tp =
-      std::chrono::system_clock::from_time_t(1384569027);
-  while (state.KeepRunning()) {
-    tp += std::chrono::seconds(1);
-    benchmark::DoNotOptimize(cctz::convert(tp, tz));
-  }
-}
-BENCHMARK(BM_Time_ToCivilUTC_CCTZ);
-
-void BM_Time_ToCivilUTC_Libc(benchmark::State& state) {
-  time_t t = 1384569027;
-  struct tm tm;
-  while (state.KeepRunning()) {
-    t += 1;
-#if defined(_WIN32) || defined(_WIN64)
-    benchmark::DoNotOptimize(gmtime_s(&tm, &t));
-#else
-    benchmark::DoNotOptimize(gmtime_r(&t, &tm));
-#endif
-  }
-}
-BENCHMARK(BM_Time_ToCivilUTC_Libc);
-
-// In each "FromCivil" benchmark we switch between two YMDhms values
-// separated by at least one transition in order to defeat any internal
-// caching of previous results (e.g., see time_local_hint_).
-//
-// The "UTC" variants use UTC instead of the Google/local time zone.
-// The "Day0" variants require normalization of the day of month.
-
-void BM_Time_FromCivil_CCTZ(benchmark::State& state) {
-  const cctz::time_zone tz = TestTimeZone();
-  int i = 0;
-  while (state.KeepRunning()) {
-    if ((i++ & 1) == 0) {
-      benchmark::DoNotOptimize(
-          cctz::convert(cctz::civil_second(2014, 12, 18, 20, 16, 18), tz));
-    } else {
-      benchmark::DoNotOptimize(
-          cctz::convert(cctz::civil_second(2013, 11, 15, 18, 30, 27), tz));
-    }
-  }
-}
-BENCHMARK(BM_Time_FromCivil_CCTZ);
-
-void BM_Time_FromCivil_Libc(benchmark::State& state) {
-  // No timezone support, so just use localtime.
-  int i = 0;
-  while (state.KeepRunning()) {
-    struct tm tm;
-    if ((i++ & 1) == 0) {
-      tm.tm_year = 2014 - 1900;
-      tm.tm_mon = 12 - 1;
-      tm.tm_mday = 18;
-      tm.tm_hour = 20;
-      tm.tm_min = 16;
-      tm.tm_sec = 18;
-    } else {
-      tm.tm_year = 2013 - 1900;
-      tm.tm_mon = 11 - 1;
-      tm.tm_mday = 15;
-      tm.tm_hour = 18;
-      tm.tm_min = 30;
-      tm.tm_sec = 27;
-    }
-    tm.tm_isdst = -1;
-    benchmark::DoNotOptimize(mktime(&tm));
-  }
-}
-BENCHMARK(BM_Time_FromCivil_Libc);
-
-void BM_Time_FromCivilUTC_CCTZ(benchmark::State& state) {
-  const cctz::time_zone tz = cctz::utc_time_zone();
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(
-        cctz::convert(cctz::civil_second(2014, 12, 18, 20, 16, 18), tz));
-  }
-}
-BENCHMARK(BM_Time_FromCivilUTC_CCTZ);
-
-// There is no BM_Time_FromCivilUTC_Libc.
-
-void BM_Time_FromCivilDay0_CCTZ(benchmark::State& state) {
-  const cctz::time_zone tz = TestTimeZone();
-  int i = 0;
-  while (state.KeepRunning()) {
-    if ((i++ & 1) == 0) {
-      benchmark::DoNotOptimize(
-          cctz::convert(cctz::civil_second(2014, 12, 0, 20, 16, 18), tz));
-    } else {
-      benchmark::DoNotOptimize(
-          cctz::convert(cctz::civil_second(2013, 11, 0, 18, 30, 27), tz));
-    }
-  }
-}
-BENCHMARK(BM_Time_FromCivilDay0_CCTZ);
-
-void BM_Time_FromCivilDay0_Libc(benchmark::State& state) {
-  // No timezone support, so just use localtime.
-  int i = 0;
-  while (state.KeepRunning()) {
-    struct tm tm;
-    if ((i++ & 1) == 0) {
-      tm.tm_year = 2014 - 1900;
-      tm.tm_mon = 12 - 1;
-      tm.tm_mday = 0;
-      tm.tm_hour = 20;
-      tm.tm_min = 16;
-      tm.tm_sec = 18;
-    } else {
-      tm.tm_year = 2013 - 1900;
-      tm.tm_mon = 11 - 1;
-      tm.tm_mday = 0;
-      tm.tm_hour = 18;
-      tm.tm_min = 30;
-      tm.tm_sec = 27;
-    }
-    tm.tm_isdst = -1;
-    benchmark::DoNotOptimize(mktime(&tm));
-  }
-}
-BENCHMARK(BM_Time_FromCivilDay0_Libc);
-
-const char* const kFormats[] = {
-    RFC1123_full,           // 0
-    RFC1123_no_wday,        // 1
-    RFC3339_full,           // 2
-    RFC3339_sec,            // 3
-    "%Y-%m-%d%ET%H:%M:%S",  // 4
-    "%Y-%m-%d",             // 5
-};
-const int kNumFormats = sizeof(kFormats) / sizeof(kFormats[0]);
-
-void BM_Format_FormatTime(benchmark::State& state) {
-  const std::string fmt = kFormats[state.range(0)];
-  state.SetLabel(fmt);
-  const cctz::time_zone tz = TestTimeZone();
-  const std::chrono::system_clock::time_point tp =
-      cctz::convert(cctz::civil_second(1977, 6, 28, 9, 8, 7), tz) +
-      std::chrono::microseconds(1);
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::format(fmt, tp, tz));
-  }
-}
-BENCHMARK(BM_Format_FormatTime)->DenseRange(0, kNumFormats - 1);
-
-void BM_Format_ParseTime(benchmark::State& state) {
-  const std::string fmt = kFormats[state.range(0)];
-  state.SetLabel(fmt);
-  const cctz::time_zone tz = TestTimeZone();
-  std::chrono::system_clock::time_point tp =
-      cctz::convert(cctz::civil_second(1977, 6, 28, 9, 8, 7), tz) +
-      std::chrono::microseconds(1);
-  const std::string when = cctz::format(fmt, tp, tz);
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(cctz::parse(fmt, when, tz, &tp));
-  }
-}
-BENCHMARK(BM_Format_ParseTime)->DenseRange(0, kNumFormats - 1);
-
-}  // namespace
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_detail.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_detail.cc
deleted file mode 100644
index 0b07e397e560..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_detail.cc
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "absl/time/internal/cctz/include/cctz/civil_time_detail.h"
-
-#include <iomanip>
-#include <ostream>
-#include <sstream>
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-namespace detail {
-
-// Output stream operators output a format matching YYYY-MM-DDThh:mm:ss,
-// while omitting fields inferior to the type's alignment. For example,
-// civil_day is formatted only as YYYY-MM-DD.
-std::ostream& operator<<(std::ostream& os, const civil_year& y) {
-  std::stringstream ss;
-  ss << y.year();  // No padding.
-  return os << ss.str();
-}
-std::ostream& operator<<(std::ostream& os, const civil_month& m) {
-  std::stringstream ss;
-  ss << civil_year(m) << '-';
-  ss << std::setfill('0') << std::setw(2) << m.month();
-  return os << ss.str();
-}
-std::ostream& operator<<(std::ostream& os, const civil_day& d) {
-  std::stringstream ss;
-  ss << civil_month(d) << '-';
-  ss << std::setfill('0') << std::setw(2) << d.day();
-  return os << ss.str();
-}
-std::ostream& operator<<(std::ostream& os, const civil_hour& h) {
-  std::stringstream ss;
-  ss << civil_day(h) << 'T';
-  ss << std::setfill('0') << std::setw(2) << h.hour();
-  return os << ss.str();
-}
-std::ostream& operator<<(std::ostream& os, const civil_minute& m) {
-  std::stringstream ss;
-  ss << civil_hour(m) << ':';
-  ss << std::setfill('0') << std::setw(2) << m.minute();
-  return os << ss.str();
-}
-std::ostream& operator<<(std::ostream& os, const civil_second& s) {
-  std::stringstream ss;
-  ss << civil_minute(s) << ':';
-  ss << std::setfill('0') << std::setw(2) << s.second();
-  return os << ss.str();
-}
-
-////////////////////////////////////////////////////////////////////////
-
-std::ostream& operator<<(std::ostream& os, weekday wd) {
-  switch (wd) {
-    case weekday::monday:
-      return os << "Monday";
-    case weekday::tuesday:
-      return os << "Tuesday";
-    case weekday::wednesday:
-      return os << "Wednesday";
-    case weekday::thursday:
-      return os << "Thursday";
-    case weekday::friday:
-      return os << "Friday";
-    case weekday::saturday:
-      return os << "Saturday";
-    case weekday::sunday:
-      return os << "Sunday";
-  }
-  return os;  // Should never get here, but -Wreturn-type may warn without this.
-}
-
-}  // namespace detail
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_test.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_test.cc
deleted file mode 100644
index a5a71230419f..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/civil_time_test.cc
+++ /dev/null
@@ -1,1066 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-
-#include <iomanip>
-#include <limits>
-#include <sstream>
-#include <string>
-#include <type_traits>
-
-#include "gtest/gtest.h"
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-template <typename T>
-std::string Format(const T& t) {
-  std::stringstream ss;
-  ss << t;
-  return ss.str();
-}
-
-}  // namespace
-
-#if __cpp_constexpr >= 201304 || (defined(_MSC_VER) && _MSC_VER >= 1910)
-// Construction constexpr tests
-
-TEST(CivilTime, Normal) {
-  constexpr civil_second css(2016, 1, 28, 17, 14, 12);
-  static_assert(css.second() == 12, "Normal.second");
-  constexpr civil_minute cmm(2016, 1, 28, 17, 14);
-  static_assert(cmm.minute() == 14, "Normal.minute");
-  constexpr civil_hour chh(2016, 1, 28, 17);
-  static_assert(chh.hour() == 17, "Normal.hour");
-  constexpr civil_day cd(2016, 1, 28);
-  static_assert(cd.day() == 28, "Normal.day");
-  constexpr civil_month cm(2016, 1);
-  static_assert(cm.month() == 1, "Normal.month");
-  constexpr civil_year cy(2016);
-  static_assert(cy.year() == 2016, "Normal.year");
-}
-
-TEST(CivilTime, Conversion) {
-  constexpr civil_year cy(2016);
-  static_assert(cy.year() == 2016, "Conversion.year");
-  constexpr civil_month cm(cy);
-  static_assert(cm.month() == 1, "Conversion.month");
-  constexpr civil_day cd(cm);
-  static_assert(cd.day() == 1, "Conversion.day");
-  constexpr civil_hour chh(cd);
-  static_assert(chh.hour() == 0, "Conversion.hour");
-  constexpr civil_minute cmm(chh);
-  static_assert(cmm.minute() == 0, "Conversion.minute");
-  constexpr civil_second css(cmm);
-  static_assert(css.second() == 0, "Conversion.second");
-}
-
-// Normalization constexpr tests
-
-TEST(CivilTime, Normalized) {
-  constexpr civil_second cs(2016, 1, 28, 17, 14, 12);
-  static_assert(cs.year() == 2016, "Normalized.year");
-  static_assert(cs.month() == 1, "Normalized.month");
-  static_assert(cs.day() == 28, "Normalized.day");
-  static_assert(cs.hour() == 17, "Normalized.hour");
-  static_assert(cs.minute() == 14, "Normalized.minute");
-  static_assert(cs.second() == 12, "Normalized.second");
-}
-
-TEST(CivilTime, SecondOverflow) {
-  constexpr civil_second cs(2016, 1, 28, 17, 14, 121);
-  static_assert(cs.year() == 2016, "SecondOverflow.year");
-  static_assert(cs.month() == 1, "SecondOverflow.month");
-  static_assert(cs.day() == 28, "SecondOverflow.day");
-  static_assert(cs.hour() == 17, "SecondOverflow.hour");
-  static_assert(cs.minute() == 16, "SecondOverflow.minute");
-  static_assert(cs.second() == 1, "SecondOverflow.second");
-}
-
-TEST(CivilTime, SecondUnderflow) {
-  constexpr civil_second cs(2016, 1, 28, 17, 14, -121);
-  static_assert(cs.year() == 2016, "SecondUnderflow.year");
-  static_assert(cs.month() == 1, "SecondUnderflow.month");
-  static_assert(cs.day() == 28, "SecondUnderflow.day");
-  static_assert(cs.hour() == 17, "SecondUnderflow.hour");
-  static_assert(cs.minute() == 11, "SecondUnderflow.minute");
-  static_assert(cs.second() == 59, "SecondUnderflow.second");
-}
-
-TEST(CivilTime, MinuteOverflow) {
-  constexpr civil_second cs(2016, 1, 28, 17, 121, 12);
-  static_assert(cs.year() == 2016, "MinuteOverflow.year");
-  static_assert(cs.month() == 1, "MinuteOverflow.month");
-  static_assert(cs.day() == 28, "MinuteOverflow.day");
-  static_assert(cs.hour() == 19, "MinuteOverflow.hour");
-  static_assert(cs.minute() == 1, "MinuteOverflow.minute");
-  static_assert(cs.second() == 12, "MinuteOverflow.second");
-}
-
-TEST(CivilTime, MinuteUnderflow) {
-  constexpr civil_second cs(2016, 1, 28, 17, -121, 12);
-  static_assert(cs.year() == 2016, "MinuteUnderflow.year");
-  static_assert(cs.month() == 1, "MinuteUnderflow.month");
-  static_assert(cs.day() == 28, "MinuteUnderflow.day");
-  static_assert(cs.hour() == 14, "MinuteUnderflow.hour");
-  static_assert(cs.minute() == 59, "MinuteUnderflow.minute");
-  static_assert(cs.second() == 12, "MinuteUnderflow.second");
-}
-
-TEST(CivilTime, HourOverflow) {
-  constexpr civil_second cs(2016, 1, 28, 49, 14, 12);
-  static_assert(cs.year() == 2016, "HourOverflow.year");
-  static_assert(cs.month() == 1, "HourOverflow.month");
-  static_assert(cs.day() == 30, "HourOverflow.day");
-  static_assert(cs.hour() == 1, "HourOverflow.hour");
-  static_assert(cs.minute() == 14, "HourOverflow.minute");
-  static_assert(cs.second() == 12, "HourOverflow.second");
-}
-
-TEST(CivilTime, HourUnderflow) {
-  constexpr civil_second cs(2016, 1, 28, -49, 14, 12);
-  static_assert(cs.year() == 2016, "HourUnderflow.year");
-  static_assert(cs.month() == 1, "HourUnderflow.month");
-  static_assert(cs.day() == 25, "HourUnderflow.day");
-  static_assert(cs.hour() == 23, "HourUnderflow.hour");
-  static_assert(cs.minute() == 14, "HourUnderflow.minute");
-  static_assert(cs.second() == 12, "HourUnderflow.second");
-}
-
-TEST(CivilTime, MonthOverflow) {
-  constexpr civil_second cs(2016, 25, 28, 17, 14, 12);
-  static_assert(cs.year() == 2018, "MonthOverflow.year");
-  static_assert(cs.month() == 1, "MonthOverflow.month");
-  static_assert(cs.day() == 28, "MonthOverflow.day");
-  static_assert(cs.hour() == 17, "MonthOverflow.hour");
-  static_assert(cs.minute() == 14, "MonthOverflow.minute");
-  static_assert(cs.second() == 12, "MonthOverflow.second");
-}
-
-TEST(CivilTime, MonthUnderflow) {
-  constexpr civil_second cs(2016, -25, 28, 17, 14, 12);
-  static_assert(cs.year() == 2013, "MonthUnderflow.year");
-  static_assert(cs.month() == 11, "MonthUnderflow.month");
-  static_assert(cs.day() == 28, "MonthUnderflow.day");
-  static_assert(cs.hour() == 17, "MonthUnderflow.hour");
-  static_assert(cs.minute() == 14, "MonthUnderflow.minute");
-  static_assert(cs.second() == 12, "MonthUnderflow.second");
-}
-
-TEST(CivilTime, C4Overflow) {
-  constexpr civil_second cs(2016, 1, 292195, 17, 14, 12);
-  static_assert(cs.year() == 2816, "C4Overflow.year");
-  static_assert(cs.month() == 1, "C4Overflow.month");
-  static_assert(cs.day() == 1, "C4Overflow.day");
-  static_assert(cs.hour() == 17, "C4Overflow.hour");
-  static_assert(cs.minute() == 14, "C4Overflow.minute");
-  static_assert(cs.second() == 12, "C4Overflow.second");
-}
-
-TEST(CivilTime, C4Underflow) {
-  constexpr civil_second cs(2016, 1, -292195, 17, 14, 12);
-  static_assert(cs.year() == 1215, "C4Underflow.year");
-  static_assert(cs.month() == 12, "C4Underflow.month");
-  static_assert(cs.day() == 30, "C4Underflow.day");
-  static_assert(cs.hour() == 17, "C4Underflow.hour");
-  static_assert(cs.minute() == 14, "C4Underflow.minute");
-  static_assert(cs.second() == 12, "C4Underflow.second");
-}
-
-TEST(CivilTime, MixedNormalization) {
-  constexpr civil_second cs(2016, -42, 122, 99, -147, 4949);
-  static_assert(cs.year() == 2012, "MixedNormalization.year");
-  static_assert(cs.month() == 10, "MixedNormalization.month");
-  static_assert(cs.day() == 4, "MixedNormalization.day");
-  static_assert(cs.hour() == 1, "MixedNormalization.hour");
-  static_assert(cs.minute() == 55, "MixedNormalization.minute");
-  static_assert(cs.second() == 29, "MixedNormalization.second");
-}
-
-// Relational constexpr tests
-
-TEST(CivilTime, Less) {
-  constexpr civil_second cs1(2016, 1, 28, 17, 14, 12);
-  constexpr civil_second cs2(2016, 1, 28, 17, 14, 13);
-  constexpr bool less = cs1 < cs2;
-  static_assert(less, "Less");
-}
-
-// Arithmetic constexpr tests
-
-TEST(CivilTime, Addition) {
-  constexpr civil_second cs1(2016, 1, 28, 17, 14, 12);
-  constexpr civil_second cs2 = cs1 + 50;
-  static_assert(cs2.year() == 2016, "Addition.year");
-  static_assert(cs2.month() == 1, "Addition.month");
-  static_assert(cs2.day() == 28, "Addition.day");
-  static_assert(cs2.hour() == 17, "Addition.hour");
-  static_assert(cs2.minute() == 15, "Addition.minute");
-  static_assert(cs2.second() == 2, "Addition.second");
-}
-
-TEST(CivilTime, Subtraction) {
-  constexpr civil_second cs1(2016, 1, 28, 17, 14, 12);
-  constexpr civil_second cs2 = cs1 - 50;
-  static_assert(cs2.year() == 2016, "Subtraction.year");
-  static_assert(cs2.month() == 1, "Subtraction.month");
-  static_assert(cs2.day() == 28, "Subtraction.day");
-  static_assert(cs2.hour() == 17, "Subtraction.hour");
-  static_assert(cs2.minute() == 13, "Subtraction.minute");
-  static_assert(cs2.second() == 22, "Subtraction.second");
-}
-
-TEST(CivilTime, Difference) {
-  constexpr civil_day cd1(2016, 1, 28);
-  constexpr civil_day cd2(2015, 1, 28);
-  constexpr int diff = cd1 - cd2;
-  static_assert(diff == 365, "Difference");
-}
-
-// NOTE: Run this with --copt=-ftrapv to detect overflow problems.
-TEST(CivilTime, ConstructionWithHugeYear) {
-  constexpr civil_hour h(-9223372036854775807, 1, 1, -1);
-  static_assert(h.year() == -9223372036854775807 - 1,
-                "ConstructionWithHugeYear");
-  static_assert(h.month() == 12, "ConstructionWithHugeYear");
-  static_assert(h.day() == 31, "ConstructionWithHugeYear");
-  static_assert(h.hour() == 23, "ConstructionWithHugeYear");
-}
-
-// NOTE: Run this with --copt=-ftrapv to detect overflow problems.
-TEST(CivilTime, DifferenceWithHugeYear) {
-  {
-    constexpr civil_day d1(9223372036854775807, 1, 1);
-    constexpr civil_day d2(9223372036854775807, 12, 31);
-    static_assert(d2 - d1 == 364, "DifferenceWithHugeYear");
-  }
-  {
-    constexpr civil_day d1(-9223372036854775807 - 1, 1, 1);
-    constexpr civil_day d2(-9223372036854775807 - 1, 12, 31);
-    static_assert(d2 - d1 == 365, "DifferenceWithHugeYear");
-  }
-  {
-    // Check the limits of the return value at the end of the year range.
-    constexpr civil_day d1(9223372036854775807, 1, 1);
-    constexpr civil_day d2(9198119301927009252, 6, 6);
-    static_assert(d1 - d2 == 9223372036854775807, "DifferenceWithHugeYear");
-    static_assert((d2 - 1) - d1 == -9223372036854775807 - 1,
-                  "DifferenceWithHugeYear");
-  }
-  {
-    // Check the limits of the return value at the start of the year range.
-    constexpr civil_day d1(-9223372036854775807 - 1, 1, 1);
-    constexpr civil_day d2(-9198119301927009254, 7, 28);
-    static_assert(d2 - d1 == 9223372036854775807, "DifferenceWithHugeYear");
-    static_assert(d1 - (d2 + 1) == -9223372036854775807 - 1,
-                  "DifferenceWithHugeYear");
-  }
-  {
-    // Check the limits of the return value from either side of year 0.
-    constexpr civil_day d1(-12626367463883278, 9, 3);
-    constexpr civil_day d2(12626367463883277, 3, 28);
-    static_assert(d2 - d1 == 9223372036854775807, "DifferenceWithHugeYear");
-    static_assert(d1 - (d2 + 1) == -9223372036854775807 - 1,
-                  "DifferenceWithHugeYear");
-  }
-}
-
-// NOTE: Run this with --copt=-ftrapv to detect overflow problems.
-TEST(CivilTime, DifferenceNoIntermediateOverflow) {
-  {
-    // The difference up to the minute field would be below the minimum
-    // diff_t, but the 52 extra seconds brings us back to the minimum.
-    constexpr civil_second s1(-292277022657, 1, 27, 8, 29 - 1, 52);
-    constexpr civil_second s2(1970, 1, 1, 0, 0 - 1, 0);
-    static_assert(s1 - s2 == -9223372036854775807 - 1,
-                  "DifferenceNoIntermediateOverflow");
-  }
-  {
-    // The difference up to the minute field would be above the maximum
-    // diff_t, but the -53 extra seconds brings us back to the maximum.
-    constexpr civil_second s1(292277026596, 12, 4, 15, 30, 7 - 7);
-    constexpr civil_second s2(1970, 1, 1, 0, 0, 0 - 7);
-    static_assert(s1 - s2 == 9223372036854775807,
-                  "DifferenceNoIntermediateOverflow");
-  }
-}
-
-// Helper constexpr tests
-
-TEST(CivilTime, WeekDay) {
-  constexpr civil_day cd(2016, 1, 28);
-  constexpr weekday wd = get_weekday(cd);
-  static_assert(wd == weekday::thursday, "Weekday");
-}
-
-TEST(CivilTime, NextWeekDay) {
-  constexpr civil_day cd(2016, 1, 28);
-  constexpr civil_day next = next_weekday(cd, weekday::thursday);
-  static_assert(next.year() == 2016, "NextWeekDay.year");
-  static_assert(next.month() == 2, "NextWeekDay.month");
-  static_assert(next.day() == 4, "NextWeekDay.day");
-}
-
-TEST(CivilTime, PrevWeekDay) {
-  constexpr civil_day cd(2016, 1, 28);
-  constexpr civil_day prev = prev_weekday(cd, weekday::thursday);
-  static_assert(prev.year() == 2016, "PrevWeekDay.year");
-  static_assert(prev.month() == 1, "PrevWeekDay.month");
-  static_assert(prev.day() == 21, "PrevWeekDay.day");
-}
-
-TEST(CivilTime, YearDay) {
-  constexpr civil_day cd(2016, 1, 28);
-  constexpr int yd = get_yearday(cd);
-  static_assert(yd == 28, "YearDay");
-}
-#endif  // __cpp_constexpr >= 201304 || (defined(_MSC_VER) && _MSC_VER >= 1910)
-
-// The remaining tests do not use constexpr.
-
-TEST(CivilTime, DefaultConstruction) {
-  civil_second ss;
-  EXPECT_EQ("1970-01-01T00:00:00", Format(ss));
-
-  civil_minute mm;
-  EXPECT_EQ("1970-01-01T00:00", Format(mm));
-
-  civil_hour hh;
-  EXPECT_EQ("1970-01-01T00", Format(hh));
-
-  civil_day d;
-  EXPECT_EQ("1970-01-01", Format(d));
-
-  civil_month m;
-  EXPECT_EQ("1970-01", Format(m));
-
-  civil_year y;
-  EXPECT_EQ("1970", Format(y));
-}
-
-TEST(CivilTime, StructMember) {
-  struct S {
-    civil_day day;
-  };
-  S s = {};
-  EXPECT_EQ(civil_day{}, s.day);
-}
-
-TEST(CivilTime, FieldsConstruction) {
-  EXPECT_EQ("2015-01-02T03:04:05", Format(civil_second(2015, 1, 2, 3, 4, 5)));
-  EXPECT_EQ("2015-01-02T03:04:00", Format(civil_second(2015, 1, 2, 3, 4)));
-  EXPECT_EQ("2015-01-02T03:00:00", Format(civil_second(2015, 1, 2, 3)));
-  EXPECT_EQ("2015-01-02T00:00:00", Format(civil_second(2015, 1, 2)));
-  EXPECT_EQ("2015-01-01T00:00:00", Format(civil_second(2015, 1)));
-  EXPECT_EQ("2015-01-01T00:00:00", Format(civil_second(2015)));
-
-  EXPECT_EQ("2015-01-02T03:04", Format(civil_minute(2015, 1, 2, 3, 4, 5)));
-  EXPECT_EQ("2015-01-02T03:04", Format(civil_minute(2015, 1, 2, 3, 4)));
-  EXPECT_EQ("2015-01-02T03:00", Format(civil_minute(2015, 1, 2, 3)));
-  EXPECT_EQ("2015-01-02T00:00", Format(civil_minute(2015, 1, 2)));
-  EXPECT_EQ("2015-01-01T00:00", Format(civil_minute(2015, 1)));
-  EXPECT_EQ("2015-01-01T00:00", Format(civil_minute(2015)));
-
-  EXPECT_EQ("2015-01-02T03", Format(civil_hour(2015, 1, 2, 3, 4, 5)));
-  EXPECT_EQ("2015-01-02T03", Format(civil_hour(2015, 1, 2, 3, 4)));
-  EXPECT_EQ("2015-01-02T03", Format(civil_hour(2015, 1, 2, 3)));
-  EXPECT_EQ("2015-01-02T00", Format(civil_hour(2015, 1, 2)));
-  EXPECT_EQ("2015-01-01T00", Format(civil_hour(2015, 1)));
-  EXPECT_EQ("2015-01-01T00", Format(civil_hour(2015)));
-
-  EXPECT_EQ("2015-01-02", Format(civil_day(2015, 1, 2, 3, 4, 5)));
-  EXPECT_EQ("2015-01-02", Format(civil_day(2015, 1, 2, 3, 4)));
-  EXPECT_EQ("2015-01-02", Format(civil_day(2015, 1, 2, 3)));
-  EXPECT_EQ("2015-01-02", Format(civil_day(2015, 1, 2)));
-  EXPECT_EQ("2015-01-01", Format(civil_day(2015, 1)));
-  EXPECT_EQ("2015-01-01", Format(civil_day(2015)));
-
-  EXPECT_EQ("2015-01", Format(civil_month(2015, 1, 2, 3, 4, 5)));
-  EXPECT_EQ("2015-01", Format(civil_month(2015, 1, 2, 3, 4)));
-  EXPECT_EQ("2015-01", Format(civil_month(2015, 1, 2, 3)));
-  EXPECT_EQ("2015-01", Format(civil_month(2015, 1, 2)));
-  EXPECT_EQ("2015-01", Format(civil_month(2015, 1)));
-  EXPECT_EQ("2015-01", Format(civil_month(2015)));
-
-  EXPECT_EQ("2015", Format(civil_year(2015, 1, 2, 3, 4, 5)));
-  EXPECT_EQ("2015", Format(civil_year(2015, 1, 2, 3, 4)));
-  EXPECT_EQ("2015", Format(civil_year(2015, 1, 2, 3)));
-  EXPECT_EQ("2015", Format(civil_year(2015, 1, 2)));
-  EXPECT_EQ("2015", Format(civil_year(2015, 1)));
-  EXPECT_EQ("2015", Format(civil_year(2015)));
-}
-
-TEST(CivilTime, FieldsConstructionLimits) {
-  const int kIntMax = std::numeric_limits<int>::max();
-  EXPECT_EQ("2038-01-19T03:14:07",
-            Format(civil_second(1970, 1, 1, 0, 0, kIntMax)));
-  EXPECT_EQ("6121-02-11T05:21:07",
-            Format(civil_second(1970, 1, 1, 0, kIntMax, kIntMax)));
-  EXPECT_EQ("251104-11-20T12:21:07",
-            Format(civil_second(1970, 1, 1, kIntMax, kIntMax, kIntMax)));
-  EXPECT_EQ("6130715-05-30T12:21:07",
-            Format(civil_second(1970, 1, kIntMax, kIntMax, kIntMax, kIntMax)));
-  EXPECT_EQ(
-      "185087685-11-26T12:21:07",
-      Format(civil_second(1970, kIntMax, kIntMax, kIntMax, kIntMax, kIntMax)));
-
-  const int kIntMin = std::numeric_limits<int>::min();
-  EXPECT_EQ("1901-12-13T20:45:52",
-            Format(civil_second(1970, 1, 1, 0, 0, kIntMin)));
-  EXPECT_EQ("-2182-11-20T18:37:52",
-            Format(civil_second(1970, 1, 1, 0, kIntMin, kIntMin)));
-  EXPECT_EQ("-247165-02-11T10:37:52",
-            Format(civil_second(1970, 1, 1, kIntMin, kIntMin, kIntMin)));
-  EXPECT_EQ("-6126776-08-01T10:37:52",
-            Format(civil_second(1970, 1, kIntMin, kIntMin, kIntMin, kIntMin)));
-  EXPECT_EQ(
-      "-185083747-10-31T10:37:52",
-      Format(civil_second(1970, kIntMin, kIntMin, kIntMin, kIntMin, kIntMin)));
-}
-
-TEST(CivilTime, ImplicitCrossAlignment) {
-  civil_year year(2015);
-  civil_month month = year;
-  civil_day day = month;
-  civil_hour hour = day;
-  civil_minute minute = hour;
-  civil_second second = minute;
-
-  second = year;
-  EXPECT_EQ(second, year);
-  second = month;
-  EXPECT_EQ(second, month);
-  second = day;
-  EXPECT_EQ(second, day);
-  second = hour;
-  EXPECT_EQ(second, hour);
-  second = minute;
-  EXPECT_EQ(second, minute);
-
-  minute = year;
-  EXPECT_EQ(minute, year);
-  minute = month;
-  EXPECT_EQ(minute, month);
-  minute = day;
-  EXPECT_EQ(minute, day);
-  minute = hour;
-  EXPECT_EQ(minute, hour);
-
-  hour = year;
-  EXPECT_EQ(hour, year);
-  hour = month;
-  EXPECT_EQ(hour, month);
-  hour = day;
-  EXPECT_EQ(hour, day);
-
-  day = year;
-  EXPECT_EQ(day, year);
-  day = month;
-  EXPECT_EQ(day, month);
-
-  month = year;
-  EXPECT_EQ(month, year);
-
-  // Ensures unsafe conversions are not allowed.
-  EXPECT_FALSE((std::is_convertible<civil_second, civil_minute>::value));
-  EXPECT_FALSE((std::is_convertible<civil_second, civil_hour>::value));
-  EXPECT_FALSE((std::is_convertible<civil_second, civil_day>::value));
-  EXPECT_FALSE((std::is_convertible<civil_second, civil_month>::value));
-  EXPECT_FALSE((std::is_convertible<civil_second, civil_year>::value));
-
-  EXPECT_FALSE((std::is_convertible<civil_minute, civil_hour>::value));
-  EXPECT_FALSE((std::is_convertible<civil_minute, civil_day>::value));
-  EXPECT_FALSE((std::is_convertible<civil_minute, civil_month>::value));
-  EXPECT_FALSE((std::is_convertible<civil_minute, civil_year>::value));
-
-  EXPECT_FALSE((std::is_convertible<civil_hour, civil_day>::value));
-  EXPECT_FALSE((std::is_convertible<civil_hour, civil_month>::value));
-  EXPECT_FALSE((std::is_convertible<civil_hour, civil_year>::value));
-
-  EXPECT_FALSE((std::is_convertible<civil_day, civil_month>::value));
-  EXPECT_FALSE((std::is_convertible<civil_day, civil_year>::value));
-
-  EXPECT_FALSE((std::is_convertible<civil_month, civil_year>::value));
-}
-
-TEST(CivilTime, ExplicitCrossAlignment) {
-  //
-  // Assign from smaller units -> larger units
-  //
-
-  civil_second second(2015, 1, 2, 3, 4, 5);
-  EXPECT_EQ("2015-01-02T03:04:05", Format(second));
-
-  civil_minute minute(second);
-  EXPECT_EQ("2015-01-02T03:04", Format(minute));
-
-  civil_hour hour(minute);
-  EXPECT_EQ("2015-01-02T03", Format(hour));
-
-  civil_day day(hour);
-  EXPECT_EQ("2015-01-02", Format(day));
-
-  civil_month month(day);
-  EXPECT_EQ("2015-01", Format(month));
-
-  civil_year year(month);
-  EXPECT_EQ("2015", Format(year));
-
-  //
-  // Now assign from larger units -> smaller units
-  //
-
-  month = civil_month(year);
-  EXPECT_EQ("2015-01", Format(month));
-
-  day = civil_day(month);
-  EXPECT_EQ("2015-01-01", Format(day));
-
-  hour = civil_hour(day);
-  EXPECT_EQ("2015-01-01T00", Format(hour));
-
-  minute = civil_minute(hour);
-  EXPECT_EQ("2015-01-01T00:00", Format(minute));
-
-  second = civil_second(minute);
-  EXPECT_EQ("2015-01-01T00:00:00", Format(second));
-}
-
-// Metafunction to test whether difference is allowed between two types.
-template <typename T1, typename T2>
-struct HasDifference {
-  template <typename U1, typename U2>
-  static std::false_type test(...);
-  template <typename U1, typename U2>
-  static std::true_type test(decltype(std::declval<U1>() - std::declval<U2>()));
-  static constexpr bool value = decltype(test<T1, T2>(0))::value;
-};
-
-TEST(CivilTime, DisallowCrossAlignedDifference) {
-  // Difference is allowed between types with the same alignment.
-  static_assert(HasDifference<civil_second, civil_second>::value, "");
-  static_assert(HasDifference<civil_minute, civil_minute>::value, "");
-  static_assert(HasDifference<civil_hour, civil_hour>::value, "");
-  static_assert(HasDifference<civil_day, civil_day>::value, "");
-  static_assert(HasDifference<civil_month, civil_month>::value, "");
-  static_assert(HasDifference<civil_year, civil_year>::value, "");
-
-  // Difference is disallowed between types with different alignments.
-  static_assert(!HasDifference<civil_second, civil_minute>::value, "");
-  static_assert(!HasDifference<civil_second, civil_hour>::value, "");
-  static_assert(!HasDifference<civil_second, civil_day>::value, "");
-  static_assert(!HasDifference<civil_second, civil_month>::value, "");
-  static_assert(!HasDifference<civil_second, civil_year>::value, "");
-
-  static_assert(!HasDifference<civil_minute, civil_hour>::value, "");
-  static_assert(!HasDifference<civil_minute, civil_day>::value, "");
-  static_assert(!HasDifference<civil_minute, civil_month>::value, "");
-  static_assert(!HasDifference<civil_minute, civil_year>::value, "");
-
-  static_assert(!HasDifference<civil_hour, civil_day>::value, "");
-  static_assert(!HasDifference<civil_hour, civil_month>::value, "");
-  static_assert(!HasDifference<civil_hour, civil_year>::value, "");
-
-  static_assert(!HasDifference<civil_day, civil_month>::value, "");
-  static_assert(!HasDifference<civil_day, civil_year>::value, "");
-
-  static_assert(!HasDifference<civil_month, civil_year>::value, "");
-}
-
-TEST(CivilTime, ValueSemantics) {
-  const civil_hour a(2015, 1, 2, 3);
-  const civil_hour b = a;
-  const civil_hour c(b);
-  civil_hour d;
-  d = c;
-  EXPECT_EQ("2015-01-02T03", Format(d));
-}
-
-TEST(CivilTime, Relational) {
-  // Tests that the alignment unit is ignored in comparison.
-  const civil_year year(2014);
-  const civil_month month(year);
-  EXPECT_EQ(year, month);
-
-#define TEST_RELATIONAL(OLDER, YOUNGER) \
-  do {                                  \
-    EXPECT_FALSE(OLDER < OLDER);        \
-    EXPECT_FALSE(OLDER > OLDER);        \
-    EXPECT_TRUE(OLDER >= OLDER);        \
-    EXPECT_TRUE(OLDER <= OLDER);        \
-    EXPECT_FALSE(YOUNGER < YOUNGER);    \
-    EXPECT_FALSE(YOUNGER > YOUNGER);    \
-    EXPECT_TRUE(YOUNGER >= YOUNGER);    \
-    EXPECT_TRUE(YOUNGER <= YOUNGER);    \
-    EXPECT_EQ(OLDER, OLDER);            \
-    EXPECT_NE(OLDER, YOUNGER);          \
-    EXPECT_LT(OLDER, YOUNGER);          \
-    EXPECT_LE(OLDER, YOUNGER);          \
-    EXPECT_GT(YOUNGER, OLDER);          \
-    EXPECT_GE(YOUNGER, OLDER);          \
-  } while (0)
-
-  // Alignment is ignored in comparison (verified above), so kSecond is used
-  // to test comparison in all field positions.
-  TEST_RELATIONAL(civil_second(2014, 1, 1, 0, 0, 0),
-                  civil_second(2015, 1, 1, 0, 0, 0));
-  TEST_RELATIONAL(civil_second(2014, 1, 1, 0, 0, 0),
-                  civil_second(2014, 2, 1, 0, 0, 0));
-  TEST_RELATIONAL(civil_second(2014, 1, 1, 0, 0, 0),
-                  civil_second(2014, 1, 2, 0, 0, 0));
-  TEST_RELATIONAL(civil_second(2014, 1, 1, 0, 0, 0),
-                  civil_second(2014, 1, 1, 1, 0, 0));
-  TEST_RELATIONAL(civil_second(2014, 1, 1, 1, 0, 0),
-                  civil_second(2014, 1, 1, 1, 1, 0));
-  TEST_RELATIONAL(civil_second(2014, 1, 1, 1, 1, 0),
-                  civil_second(2014, 1, 1, 1, 1, 1));
-
-  // Tests the relational operators of two different civil-time types.
-  TEST_RELATIONAL(civil_day(2014, 1, 1), civil_minute(2014, 1, 1, 1, 1));
-  TEST_RELATIONAL(civil_day(2014, 1, 1), civil_month(2014, 2));
-
-#undef TEST_RELATIONAL
-}
-
-TEST(CivilTime, Arithmetic) {
-  civil_second second(2015, 1, 2, 3, 4, 5);
-  EXPECT_EQ("2015-01-02T03:04:06", Format(second += 1));
-  EXPECT_EQ("2015-01-02T03:04:07", Format(second + 1));
-  EXPECT_EQ("2015-01-02T03:04:08", Format(2 + second));
-  EXPECT_EQ("2015-01-02T03:04:05", Format(second - 1));
-  EXPECT_EQ("2015-01-02T03:04:05", Format(second -= 1));
-  EXPECT_EQ("2015-01-02T03:04:05", Format(second++));
-  EXPECT_EQ("2015-01-02T03:04:07", Format(++second));
-  EXPECT_EQ("2015-01-02T03:04:07", Format(second--));
-  EXPECT_EQ("2015-01-02T03:04:05", Format(--second));
-
-  civil_minute minute(2015, 1, 2, 3, 4);
-  EXPECT_EQ("2015-01-02T03:05", Format(minute += 1));
-  EXPECT_EQ("2015-01-02T03:06", Format(minute + 1));
-  EXPECT_EQ("2015-01-02T03:07", Format(2 + minute));
-  EXPECT_EQ("2015-01-02T03:04", Format(minute - 1));
-  EXPECT_EQ("2015-01-02T03:04", Format(minute -= 1));
-  EXPECT_EQ("2015-01-02T03:04", Format(minute++));
-  EXPECT_EQ("2015-01-02T03:06", Format(++minute));
-  EXPECT_EQ("2015-01-02T03:06", Format(minute--));
-  EXPECT_EQ("2015-01-02T03:04", Format(--minute));
-
-  civil_hour hour(2015, 1, 2, 3);
-  EXPECT_EQ("2015-01-02T04", Format(hour += 1));
-  EXPECT_EQ("2015-01-02T05", Format(hour + 1));
-  EXPECT_EQ("2015-01-02T06", Format(2 + hour));
-  EXPECT_EQ("2015-01-02T03", Format(hour - 1));
-  EXPECT_EQ("2015-01-02T03", Format(hour -= 1));
-  EXPECT_EQ("2015-01-02T03", Format(hour++));
-  EXPECT_EQ("2015-01-02T05", Format(++hour));
-  EXPECT_EQ("2015-01-02T05", Format(hour--));
-  EXPECT_EQ("2015-01-02T03", Format(--hour));
-
-  civil_day day(2015, 1, 2);
-  EXPECT_EQ("2015-01-03", Format(day += 1));
-  EXPECT_EQ("2015-01-04", Format(day + 1));
-  EXPECT_EQ("2015-01-05", Format(2 + day));
-  EXPECT_EQ("2015-01-02", Format(day - 1));
-  EXPECT_EQ("2015-01-02", Format(day -= 1));
-  EXPECT_EQ("2015-01-02", Format(day++));
-  EXPECT_EQ("2015-01-04", Format(++day));
-  EXPECT_EQ("2015-01-04", Format(day--));
-  EXPECT_EQ("2015-01-02", Format(--day));
-
-  civil_month month(2015, 1);
-  EXPECT_EQ("2015-02", Format(month += 1));
-  EXPECT_EQ("2015-03", Format(month + 1));
-  EXPECT_EQ("2015-04", Format(2 + month));
-  EXPECT_EQ("2015-01", Format(month - 1));
-  EXPECT_EQ("2015-01", Format(month -= 1));
-  EXPECT_EQ("2015-01", Format(month++));
-  EXPECT_EQ("2015-03", Format(++month));
-  EXPECT_EQ("2015-03", Format(month--));
-  EXPECT_EQ("2015-01", Format(--month));
-
-  civil_year year(2015);
-  EXPECT_EQ("2016", Format(year += 1));
-  EXPECT_EQ("2017", Format(year + 1));
-  EXPECT_EQ("2018", Format(2 + year));
-  EXPECT_EQ("2015", Format(year - 1));
-  EXPECT_EQ("2015", Format(year -= 1));
-  EXPECT_EQ("2015", Format(year++));
-  EXPECT_EQ("2017", Format(++year));
-  EXPECT_EQ("2017", Format(year--));
-  EXPECT_EQ("2015", Format(--year));
-}
-
-TEST(CivilTime, ArithmeticLimits) {
-  const int kIntMax = std::numeric_limits<int>::max();
-  const int kIntMin = std::numeric_limits<int>::min();
-
-  civil_second second(1970, 1, 1, 0, 0, 0);
-  second += kIntMax;
-  EXPECT_EQ("2038-01-19T03:14:07", Format(second));
-  second -= kIntMax;
-  EXPECT_EQ("1970-01-01T00:00:00", Format(second));
-  second += kIntMin;
-  EXPECT_EQ("1901-12-13T20:45:52", Format(second));
-  second -= kIntMin;
-  EXPECT_EQ("1970-01-01T00:00:00", Format(second));
-
-  civil_minute minute(1970, 1, 1, 0, 0);
-  minute += kIntMax;
-  EXPECT_EQ("6053-01-23T02:07", Format(minute));
-  minute -= kIntMax;
-  EXPECT_EQ("1970-01-01T00:00", Format(minute));
-  minute += kIntMin;
-  EXPECT_EQ("-2114-12-08T21:52", Format(minute));
-  minute -= kIntMin;
-  EXPECT_EQ("1970-01-01T00:00", Format(minute));
-
-  civil_hour hour(1970, 1, 1, 0);
-  hour += kIntMax;
-  EXPECT_EQ("246953-10-09T07", Format(hour));
-  hour -= kIntMax;
-  EXPECT_EQ("1970-01-01T00", Format(hour));
-  hour += kIntMin;
-  EXPECT_EQ("-243014-03-24T16", Format(hour));
-  hour -= kIntMin;
-  EXPECT_EQ("1970-01-01T00", Format(hour));
-
-  civil_day day(1970, 1, 1);
-  day += kIntMax;
-  EXPECT_EQ("5881580-07-11", Format(day));
-  day -= kIntMax;
-  EXPECT_EQ("1970-01-01", Format(day));
-  day += kIntMin;
-  EXPECT_EQ("-5877641-06-23", Format(day));
-  day -= kIntMin;
-  EXPECT_EQ("1970-01-01", Format(day));
-
-  civil_month month(1970, 1);
-  month += kIntMax;
-  EXPECT_EQ("178958940-08", Format(month));
-  month -= kIntMax;
-  EXPECT_EQ("1970-01", Format(month));
-  month += kIntMin;
-  EXPECT_EQ("-178955001-05", Format(month));
-  month -= kIntMin;
-  EXPECT_EQ("1970-01", Format(month));
-
-  civil_year year(0);
-  year += kIntMax;
-  EXPECT_EQ("2147483647", Format(year));
-  year -= kIntMax;
-  EXPECT_EQ("0", Format(year));
-  year += kIntMin;
-  EXPECT_EQ("-2147483648", Format(year));
-  year -= kIntMin;
-  EXPECT_EQ("0", Format(year));
-}
-
-TEST(CivilTime, ArithmeticDifference) {
-  civil_second second(2015, 1, 2, 3, 4, 5);
-  EXPECT_EQ(0, second - second);
-  EXPECT_EQ(10, (second + 10) - second);
-  EXPECT_EQ(-10, (second - 10) - second);
-
-  civil_minute minute(2015, 1, 2, 3, 4);
-  EXPECT_EQ(0, minute - minute);
-  EXPECT_EQ(10, (minute + 10) - minute);
-  EXPECT_EQ(-10, (minute - 10) - minute);
-
-  civil_hour hour(2015, 1, 2, 3);
-  EXPECT_EQ(0, hour - hour);
-  EXPECT_EQ(10, (hour + 10) - hour);
-  EXPECT_EQ(-10, (hour - 10) - hour);
-
-  civil_day day(2015, 1, 2);
-  EXPECT_EQ(0, day - day);
-  EXPECT_EQ(10, (day + 10) - day);
-  EXPECT_EQ(-10, (day - 10) - day);
-
-  civil_month month(2015, 1);
-  EXPECT_EQ(0, month - month);
-  EXPECT_EQ(10, (month + 10) - month);
-  EXPECT_EQ(-10, (month - 10) - month);
-
-  civil_year year(2015);
-  EXPECT_EQ(0, year - year);
-  EXPECT_EQ(10, (year + 10) - year);
-  EXPECT_EQ(-10, (year - 10) - year);
-}
-
-TEST(CivilTime, DifferenceLimits) {
-  const int kIntMax = std::numeric_limits<int>::max();
-  const int kIntMin = std::numeric_limits<int>::min();
-
-  // Check day arithmetic at the end of the year range.
-  const civil_day max_day(kIntMax, 12, 31);
-  EXPECT_EQ(1, max_day - (max_day - 1));
-  EXPECT_EQ(-1, (max_day - 1) - max_day);
-
-  // Check day arithmetic at the end of the year range.
-  const civil_day min_day(kIntMin, 1, 1);
-  EXPECT_EQ(1, (min_day + 1) - min_day);
-  EXPECT_EQ(-1, min_day - (min_day + 1));
-
-  // Check the limits of the return value.
-  const civil_day d1(1970, 1, 1);
-  const civil_day d2(5881580, 7, 11);
-  EXPECT_EQ(kIntMax, d2 - d1);
-  EXPECT_EQ(kIntMin, d1 - (d2 + 1));
-}
-
-TEST(CivilTime, Properties) {
-  civil_second ss(2015, 2, 3, 4, 5, 6);
-  EXPECT_EQ(2015, ss.year());
-  EXPECT_EQ(2, ss.month());
-  EXPECT_EQ(3, ss.day());
-  EXPECT_EQ(4, ss.hour());
-  EXPECT_EQ(5, ss.minute());
-  EXPECT_EQ(6, ss.second());
-  EXPECT_EQ(weekday::tuesday, get_weekday(ss));
-  EXPECT_EQ(34, get_yearday(ss));
-
-  civil_minute mm(2015, 2, 3, 4, 5, 6);
-  EXPECT_EQ(2015, mm.year());
-  EXPECT_EQ(2, mm.month());
-  EXPECT_EQ(3, mm.day());
-  EXPECT_EQ(4, mm.hour());
-  EXPECT_EQ(5, mm.minute());
-  EXPECT_EQ(0, mm.second());
-  EXPECT_EQ(weekday::tuesday, get_weekday(mm));
-  EXPECT_EQ(34, get_yearday(mm));
-
-  civil_hour hh(2015, 2, 3, 4, 5, 6);
-  EXPECT_EQ(2015, hh.year());
-  EXPECT_EQ(2, hh.month());
-  EXPECT_EQ(3, hh.day());
-  EXPECT_EQ(4, hh.hour());
-  EXPECT_EQ(0, hh.minute());
-  EXPECT_EQ(0, hh.second());
-  EXPECT_EQ(weekday::tuesday, get_weekday(hh));
-  EXPECT_EQ(34, get_yearday(hh));
-
-  civil_day d(2015, 2, 3, 4, 5, 6);
-  EXPECT_EQ(2015, d.year());
-  EXPECT_EQ(2, d.month());
-  EXPECT_EQ(3, d.day());
-  EXPECT_EQ(0, d.hour());
-  EXPECT_EQ(0, d.minute());
-  EXPECT_EQ(0, d.second());
-  EXPECT_EQ(weekday::tuesday, get_weekday(d));
-  EXPECT_EQ(34, get_yearday(d));
-
-  civil_month m(2015, 2, 3, 4, 5, 6);
-  EXPECT_EQ(2015, m.year());
-  EXPECT_EQ(2, m.month());
-  EXPECT_EQ(1, m.day());
-  EXPECT_EQ(0, m.hour());
-  EXPECT_EQ(0, m.minute());
-  EXPECT_EQ(0, m.second());
-  EXPECT_EQ(weekday::sunday, get_weekday(m));
-  EXPECT_EQ(32, get_yearday(m));
-
-  civil_year y(2015, 2, 3, 4, 5, 6);
-  EXPECT_EQ(2015, y.year());
-  EXPECT_EQ(1, y.month());
-  EXPECT_EQ(1, y.day());
-  EXPECT_EQ(0, y.hour());
-  EXPECT_EQ(0, y.minute());
-  EXPECT_EQ(0, y.second());
-  EXPECT_EQ(weekday::thursday, get_weekday(y));
-  EXPECT_EQ(1, get_yearday(y));
-}
-
-TEST(CivilTime, OutputStream) {
-  // Tests formatting of civil_year, which does not pad.
-  EXPECT_EQ("2016", Format(civil_year(2016)));
-  EXPECT_EQ("123", Format(civil_year(123)));
-  EXPECT_EQ("0", Format(civil_year(0)));
-  EXPECT_EQ("-1", Format(civil_year(-1)));
-
-  // Tests formatting of sub-year types, which pad to 2 digits
-  EXPECT_EQ("2016-02", Format(civil_month(2016, 2)));
-  EXPECT_EQ("2016-02-03", Format(civil_day(2016, 2, 3)));
-  EXPECT_EQ("2016-02-03T04", Format(civil_hour(2016, 2, 3, 4)));
-  EXPECT_EQ("2016-02-03T04:05", Format(civil_minute(2016, 2, 3, 4, 5)));
-  EXPECT_EQ("2016-02-03T04:05:06", Format(civil_second(2016, 2, 3, 4, 5, 6)));
-
-  // Tests formatting of weekday.
-  EXPECT_EQ("Monday", Format(weekday::monday));
-  EXPECT_EQ("Tuesday", Format(weekday::tuesday));
-  EXPECT_EQ("Wednesday", Format(weekday::wednesday));
-  EXPECT_EQ("Thursday", Format(weekday::thursday));
-  EXPECT_EQ("Friday", Format(weekday::friday));
-  EXPECT_EQ("Saturday", Format(weekday::saturday));
-  EXPECT_EQ("Sunday", Format(weekday::sunday));
-}
-
-TEST(CivilTime, OutputStreamLeftFillWidth) {
-  civil_second cs(2016, 2, 3, 4, 5, 6);
-  {
-    std::stringstream ss;
-    ss << std::left << std::setfill('.');
-    ss << std::setw(3) << 'X';
-    ss << std::setw(21) << civil_year(cs);
-    ss << std::setw(3) << 'X';
-    EXPECT_EQ("X..2016.................X..", ss.str());
-  }
-  {
-    std::stringstream ss;
-    ss << std::left << std::setfill('.');
-    ss << std::setw(3) << 'X';
-    ss << std::setw(21) << civil_month(cs);
-    ss << std::setw(3) << 'X';
-    EXPECT_EQ("X..2016-02..............X..", ss.str());
-  }
-  {
-    std::stringstream ss;
-    ss << std::left << std::setfill('.');
-    ss << std::setw(3) << 'X';
-    ss << std::setw(21) << civil_day(cs);
-    ss << std::setw(3) << 'X';
-    EXPECT_EQ("X..2016-02-03...........X..", ss.str());
-  }
-  {
-    std::stringstream ss;
-    ss << std::left << std::setfill('.');
-    ss << std::setw(3) << 'X';
-    ss << std::setw(21) << civil_hour(cs);
-    ss << std::setw(3) << 'X';
-    EXPECT_EQ("X..2016-02-03T04........X..", ss.str());
-  }
-  {
-    std::stringstream ss;
-    ss << std::left << std::setfill('.');
-    ss << std::setw(3) << 'X';
-    ss << std::setw(21) << civil_minute(cs);
-    ss << std::setw(3) << 'X';
-    EXPECT_EQ("X..2016-02-03T04:05.....X..", ss.str());
-  }
-  {
-    std::stringstream ss;
-    ss << std::left << std::setfill('.');
-    ss << std::setw(3) << 'X';
-    ss << std::setw(21) << civil_second(cs);
-    ss << std::setw(3) << 'X';
-    EXPECT_EQ("X..2016-02-03T04:05:06..X..", ss.str());
-  }
-}
-
-TEST(CivilTime, NextPrevWeekday) {
-  // Jan 1, 1970 was a Thursday.
-  const civil_day thursday(1970, 1, 1);
-  EXPECT_EQ(weekday::thursday, get_weekday(thursday));
-
-  // Thursday -> Thursday
-  civil_day d = next_weekday(thursday, weekday::thursday);
-  EXPECT_EQ(7, d - thursday) << Format(d);
-  EXPECT_EQ(d - 14, prev_weekday(thursday, weekday::thursday));
-
-  // Thursday -> Friday
-  d = next_weekday(thursday, weekday::friday);
-  EXPECT_EQ(1, d - thursday) << Format(d);
-  EXPECT_EQ(d - 7, prev_weekday(thursday, weekday::friday));
-
-  // Thursday -> Saturday
-  d = next_weekday(thursday, weekday::saturday);
-  EXPECT_EQ(2, d - thursday) << Format(d);
-  EXPECT_EQ(d - 7, prev_weekday(thursday, weekday::saturday));
-
-  // Thursday -> Sunday
-  d = next_weekday(thursday, weekday::sunday);
-  EXPECT_EQ(3, d - thursday) << Format(d);
-  EXPECT_EQ(d - 7, prev_weekday(thursday, weekday::sunday));
-
-  // Thursday -> Monday
-  d = next_weekday(thursday, weekday::monday);
-  EXPECT_EQ(4, d - thursday) << Format(d);
-  EXPECT_EQ(d - 7, prev_weekday(thursday, weekday::monday));
-
-  // Thursday -> Tuesday
-  d = next_weekday(thursday, weekday::tuesday);
-  EXPECT_EQ(5, d - thursday) << Format(d);
-  EXPECT_EQ(d - 7, prev_weekday(thursday, weekday::tuesday));
-
-  // Thursday -> Wednesday
-  d = next_weekday(thursday, weekday::wednesday);
-  EXPECT_EQ(6, d - thursday) << Format(d);
-  EXPECT_EQ(d - 7, prev_weekday(thursday, weekday::wednesday));
-}
-
-TEST(CivilTime, NormalizeWithHugeYear) {
-  civil_month c(9223372036854775807, 1);
-  EXPECT_EQ("9223372036854775807-01", Format(c));
-  c = c - 1;  // Causes normalization
-  EXPECT_EQ("9223372036854775806-12", Format(c));
-
-  c = civil_month(-9223372036854775807 - 1, 1);
-  EXPECT_EQ("-9223372036854775808-01", Format(c));
-  c = c + 12;  // Causes normalization
-  EXPECT_EQ("-9223372036854775807-01", Format(c));
-}
-
-TEST(CivilTime, LeapYears) {
-  // Test data for leap years.
-  const struct {
-    int year;
-    int days;
-    struct {
-      int month;
-      int day;
-    } leap_day;  // The date of the day after Feb 28.
-  } kLeapYearTable[]{
-      {1900, 365, {3, 1}},  {1999, 365, {3, 1}},
-      {2000, 366, {2, 29}},  // leap year
-      {2001, 365, {3, 1}},  {2002, 365, {3, 1}},
-      {2003, 365, {3, 1}},  {2004, 366, {2, 29}},  // leap year
-      {2005, 365, {3, 1}},  {2006, 365, {3, 1}},
-      {2007, 365, {3, 1}},  {2008, 366, {2, 29}},  // leap year
-      {2009, 365, {3, 1}},  {2100, 365, {3, 1}},
-  };
-
-  for (const auto& e : kLeapYearTable) {
-    // Tests incrementing through the leap day.
-    const civil_day feb28(e.year, 2, 28);
-    const civil_day next_day = feb28 + 1;
-    EXPECT_EQ(e.leap_day.month, next_day.month());
-    EXPECT_EQ(e.leap_day.day, next_day.day());
-
-    // Tests difference in days of leap years.
-    const civil_year year(feb28);
-    const civil_year next_year = year + 1;
-    EXPECT_EQ(e.days, civil_day(next_year) - civil_day(year));
-  }
-}
-
-TEST(CivilTime, FirstThursdayInMonth) {
-  const civil_day nov1(2014, 11, 1);
-  const civil_day thursday = next_weekday(nov1 - 1, weekday::thursday);
-  EXPECT_EQ("2014-11-06", Format(thursday));
-
-  // Bonus: Date of Thanksgiving in the United States
-  // Rule: Fourth Thursday of November
-  const civil_day thanksgiving = thursday + 7 * 3;
-  EXPECT_EQ("2014-11-27", Format(thanksgiving));
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.cc
deleted file mode 100644
index 303c0244a824..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.cc
+++ /dev/null
@@ -1,140 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "time_zone_fixed.h"
-
-#include <algorithm>
-#include <cassert>
-#include <chrono>
-#include <cstring>
-#include <string>
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-// The prefix used for the internal names of fixed-offset zones.
-const char kFixedZonePrefix[] = "Fixed/UTC";
-
-const char kDigits[] = "0123456789";
-
-char* Format02d(char* p, int v) {
-  *p++ = kDigits[(v / 10) % 10];
-  *p++ = kDigits[v % 10];
-  return p;
-}
-
-int Parse02d(const char* p) {
-  if (const char* ap = std::strchr(kDigits, *p)) {
-    int v = static_cast<int>(ap - kDigits);
-    if (const char* bp = std::strchr(kDigits, *++p)) {
-      return (v * 10) + static_cast<int>(bp - kDigits);
-    }
-  }
-  return -1;
-}
-
-}  // namespace
-
-bool FixedOffsetFromName(const std::string& name, seconds* offset) {
-  if (name.compare(0, std::string::npos, "UTC", 3) == 0) {
-    *offset = seconds::zero();
-    return true;
-  }
-
-  const std::size_t prefix_len = sizeof(kFixedZonePrefix) - 1;
-  const char* const ep = kFixedZonePrefix + prefix_len;
-  if (name.size() != prefix_len + 9)  // <prefix>+99:99:99
-    return false;
-  if (!std::equal(kFixedZonePrefix, ep, name.begin())) return false;
-  const char* np = name.data() + prefix_len;
-  if (np[0] != '+' && np[0] != '-') return false;
-  if (np[3] != ':' || np[6] != ':')  // see note below about large offsets
-    return false;
-
-  int hours = Parse02d(np + 1);
-  if (hours == -1) return false;
-  int mins = Parse02d(np + 4);
-  if (mins == -1) return false;
-  int secs = Parse02d(np + 7);
-  if (secs == -1) return false;
-
-  secs += ((hours * 60) + mins) * 60;
-  if (secs > 24 * 60 * 60) return false;  // outside supported offset range
-  *offset = seconds(secs * (np[0] == '-' ? -1 : 1));  // "-" means west
-  return true;
-}
-
-std::string FixedOffsetToName(const seconds& offset) {
-  if (offset == seconds::zero()) return "UTC";
-  if (offset < std::chrono::hours(-24) || offset > std::chrono::hours(24)) {
-    // We don't support fixed-offset zones more than 24 hours
-    // away from UTC to avoid complications in rendering such
-    // offsets and to (somewhat) limit the total number of zones.
-    return "UTC";
-  }
-  int offset_seconds = static_cast<int>(offset.count());
-  const char sign = (offset_seconds < 0 ? '-' : '+');
-  int offset_minutes = offset_seconds / 60;
-  offset_seconds %= 60;
-  if (sign == '-') {
-    if (offset_seconds > 0) {
-      offset_seconds -= 60;
-      offset_minutes += 1;
-    }
-    offset_seconds = -offset_seconds;
-    offset_minutes = -offset_minutes;
-  }
-  int offset_hours = offset_minutes / 60;
-  offset_minutes %= 60;
-  const std::size_t prefix_len = sizeof(kFixedZonePrefix) - 1;
-  char buf[prefix_len + sizeof("-24:00:00")];
-  char* ep = std::copy(kFixedZonePrefix, kFixedZonePrefix + prefix_len, buf);
-  *ep++ = sign;
-  ep = Format02d(ep, offset_hours);
-  *ep++ = ':';
-  ep = Format02d(ep, offset_minutes);
-  *ep++ = ':';
-  ep = Format02d(ep, offset_seconds);
-  *ep++ = '\0';
-  assert(ep == buf + sizeof(buf));
-  return buf;
-}
-
-std::string FixedOffsetToAbbr(const seconds& offset) {
-  std::string abbr = FixedOffsetToName(offset);
-  const std::size_t prefix_len = sizeof(kFixedZonePrefix) - 1;
-  if (abbr.size() == prefix_len + 9) {         // <prefix>+99:99:99
-    abbr.erase(0, prefix_len);                 // +99:99:99
-    abbr.erase(6, 1);                          // +99:9999
-    abbr.erase(3, 1);                          // +999999
-    if (abbr[5] == '0' && abbr[6] == '0') {    // +999900
-      abbr.erase(5, 2);                        // +9999
-      if (abbr[3] == '0' && abbr[4] == '0') {  // +9900
-        abbr.erase(3, 2);                      // +99
-      }
-    }
-  }
-  return abbr;
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.h
deleted file mode 100644
index e74a0bbd9dde..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_fixed.h
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_
-
-#include <string>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// Helper functions for dealing with the names and abbreviations
-// of time zones that are a fixed offset (seconds east) from UTC.
-// FixedOffsetFromName() extracts the offset from a valid fixed-offset
-// name, while FixedOffsetToName() and FixedOffsetToAbbr() generate
-// the canonical zone name and abbreviation respectively for the given
-// offset.
-//
-// A fixed-offset name looks like "Fixed/UTC<+-><hours>:<mins>:<secs>".
-// Its abbreviation is of the form "UTC(<+->H?H(MM(SS)?)?)?" where the
-// optional pieces are omitted when their values are zero.  (Note that
-// the sign is the opposite of that used in a POSIX TZ specification.)
-//
-// Note: FixedOffsetFromName() fails on syntax errors or when the parsed
-// offset exceeds 24 hours.  FixedOffsetToName() and FixedOffsetToAbbr()
-// both produce "UTC" when the argument offset exceeds 24 hours.
-bool FixedOffsetFromName(const std::string& name, seconds* offset);
-std::string FixedOffsetToName(const seconds& offset);
-std::string FixedOffsetToAbbr(const seconds& offset);
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format.cc
deleted file mode 100644
index d8cb047425ee..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format.cc
+++ /dev/null
@@ -1,1029 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#if !defined(HAS_STRPTIME)
-#if !defined(_MSC_VER) && !defined(__MINGW32__)
-#define HAS_STRPTIME 1  // assume everyone has strptime() except windows
-#endif
-#endif
-
-#if defined(HAS_STRPTIME) && HAS_STRPTIME
-#if !defined(_XOPEN_SOURCE)
-#define _XOPEN_SOURCE  // Definedness suffices for strptime.
-#endif
-#endif
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-// Include time.h directly since, by C++ standards, ctime doesn't have to
-// declare strptime.
-#include <time.h>
-
-#include <cctype>
-#include <chrono>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
-#include <ctime>
-#include <limits>
-#include <string>
-#include <vector>
-#if !HAS_STRPTIME
-#include <iomanip>
-#include <sstream>
-#endif
-
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "time_zone_if.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-namespace detail {
-
-namespace {
-
-#if !HAS_STRPTIME
-// Build a strptime() using C++11's std::get_time().
-char* strptime(const char* s, const char* fmt, std::tm* tm) {
-  std::istringstream input(s);
-  input >> std::get_time(tm, fmt);
-  if (input.fail()) return nullptr;
-  return const_cast<char*>(s) +
-         (input.eof() ? strlen(s) : static_cast<std::size_t>(input.tellg()));
-}
-#endif
-
-// Convert a cctz::weekday to a tm_wday value (0-6, Sunday = 0).
-int ToTmWday(weekday wd) {
-  switch (wd) {
-    case weekday::sunday:
-      return 0;
-    case weekday::monday:
-      return 1;
-    case weekday::tuesday:
-      return 2;
-    case weekday::wednesday:
-      return 3;
-    case weekday::thursday:
-      return 4;
-    case weekday::friday:
-      return 5;
-    case weekday::saturday:
-      return 6;
-  }
-  return 0; /*NOTREACHED*/
-}
-
-// Convert a tm_wday value (0-6, Sunday = 0) to a cctz::weekday.
-weekday FromTmWday(int tm_wday) {
-  switch (tm_wday) {
-    case 0:
-      return weekday::sunday;
-    case 1:
-      return weekday::monday;
-    case 2:
-      return weekday::tuesday;
-    case 3:
-      return weekday::wednesday;
-    case 4:
-      return weekday::thursday;
-    case 5:
-      return weekday::friday;
-    case 6:
-      return weekday::saturday;
-  }
-  return weekday::sunday; /*NOTREACHED*/
-}
-
-std::tm ToTM(const time_zone::absolute_lookup& al) {
-  std::tm tm{};
-  tm.tm_sec = al.cs.second();
-  tm.tm_min = al.cs.minute();
-  tm.tm_hour = al.cs.hour();
-  tm.tm_mday = al.cs.day();
-  tm.tm_mon = al.cs.month() - 1;
-
-  // Saturate tm.tm_year is cases of over/underflow.
-  if (al.cs.year() < std::numeric_limits<int>::min() + 1900) {
-    tm.tm_year = std::numeric_limits<int>::min();
-  } else if (al.cs.year() - 1900 > std::numeric_limits<int>::max()) {
-    tm.tm_year = std::numeric_limits<int>::max();
-  } else {
-    tm.tm_year = static_cast<int>(al.cs.year() - 1900);
-  }
-
-  tm.tm_wday = ToTmWday(get_weekday(al.cs));
-  tm.tm_yday = get_yearday(al.cs) - 1;
-  tm.tm_isdst = al.is_dst ? 1 : 0;
-  return tm;
-}
-
-// Returns the week of the year [0:53] given a civil day and the day on
-// which weeks are defined to start.
-int ToWeek(const civil_day& cd, weekday week_start) {
-  const civil_day d(cd.year() % 400, cd.month(), cd.day());
-  return static_cast<int>((d - prev_weekday(civil_year(d), week_start)) / 7);
-}
-
-const char kDigits[] = "0123456789";
-
-// Formats a 64-bit integer in the given field width.  Note that it is up
-// to the caller of Format64() [and Format02d()/FormatOffset()] to ensure
-// that there is sufficient space before ep to hold the conversion.
-char* Format64(char* ep, int width, std::int_fast64_t v) {
-  bool neg = false;
-  if (v < 0) {
-    --width;
-    neg = true;
-    if (v == std::numeric_limits<std::int_fast64_t>::min()) {
-      // Avoid negating minimum value.
-      std::int_fast64_t last_digit = -(v % 10);
-      v /= 10;
-      if (last_digit < 0) {
-        ++v;
-        last_digit += 10;
-      }
-      --width;
-      *--ep = kDigits[last_digit];
-    }
-    v = -v;
-  }
-  do {
-    --width;
-    *--ep = kDigits[v % 10];
-  } while (v /= 10);
-  while (--width >= 0) *--ep = '0';  // zero pad
-  if (neg) *--ep = '-';
-  return ep;
-}
-
-// Formats [0 .. 99] as %02d.
-char* Format02d(char* ep, int v) {
-  *--ep = kDigits[v % 10];
-  *--ep = kDigits[(v / 10) % 10];
-  return ep;
-}
-
-// Formats a UTC offset, like +00:00.
-char* FormatOffset(char* ep, int offset, const char* mode) {
-  // TODO: Follow the RFC3339 "Unknown Local Offset Convention" and
-  // generate a "negative zero" when we're formatting a zero offset
-  // as the result of a failed load_time_zone().
-  char sign = '+';
-  if (offset < 0) {
-    offset = -offset;  // bounded by 24h so no overflow
-    sign = '-';
-  }
-  const int seconds = offset % 60;
-  const int minutes = (offset /= 60) % 60;
-  const int hours = offset /= 60;
-  const char sep = mode[0];
-  const bool ext = (sep != '\0' && mode[1] == '*');
-  const bool ccc = (ext && mode[2] == ':');
-  if (ext && (!ccc || seconds != 0)) {
-    ep = Format02d(ep, seconds);
-    *--ep = sep;
-  } else {
-    // If we're not rendering seconds, sub-minute negative offsets
-    // should get a positive sign (e.g., offset=-10s => "+00:00").
-    if (hours == 0 && minutes == 0) sign = '+';
-  }
-  if (!ccc || minutes != 0 || seconds != 0) {
-    ep = Format02d(ep, minutes);
-    if (sep != '\0') *--ep = sep;
-  }
-  ep = Format02d(ep, hours);
-  *--ep = sign;
-  return ep;
-}
-
-// Formats a std::tm using strftime(3).
-void FormatTM(std::string* out, const std::string& fmt, const std::tm& tm) {
-  // strftime(3) returns the number of characters placed in the output
-  // array (which may be 0 characters).  It also returns 0 to indicate
-  // an error, like the array wasn't large enough.  To accommodate this,
-  // the following code grows the buffer size from 2x the format string
-  // length up to 32x.
-  for (std::size_t i = 2; i != 32; i *= 2) {
-    std::size_t buf_size = fmt.size() * i;
-    std::vector<char> buf(buf_size);
-    if (std::size_t len = strftime(&buf[0], buf_size, fmt.c_str(), &tm)) {
-      out->append(&buf[0], len);
-      return;
-    }
-  }
-}
-
-// Used for %E#S/%E#f specifiers and for data values in parse().
-template <typename T>
-const char* ParseInt(const char* dp, int width, T min, T max, T* vp) {
-  if (dp != nullptr) {
-    const T kmin = std::numeric_limits<T>::min();
-    bool erange = false;
-    bool neg = false;
-    T value = 0;
-    if (*dp == '-') {
-      neg = true;
-      if (width <= 0 || --width != 0) {
-        ++dp;
-      } else {
-        dp = nullptr;  // width was 1
-      }
-    }
-    if (const char* const bp = dp) {
-      while (const char* cp = strchr(kDigits, *dp)) {
-        int d = static_cast<int>(cp - kDigits);
-        if (d >= 10) break;
-        if (value < kmin / 10) {
-          erange = true;
-          break;
-        }
-        value *= 10;
-        if (value < kmin + d) {
-          erange = true;
-          break;
-        }
-        value -= d;
-        dp += 1;
-        if (width > 0 && --width == 0) break;
-      }
-      if (dp != bp && !erange && (neg || value != kmin)) {
-        if (!neg || value != 0) {
-          if (!neg) value = -value;  // make positive
-          if (min <= value && value <= max) {
-            *vp = value;
-          } else {
-            dp = nullptr;
-          }
-        } else {
-          dp = nullptr;
-        }
-      } else {
-        dp = nullptr;
-      }
-    }
-  }
-  return dp;
-}
-
-// The number of base-10 digits that can be represented by a signed 64-bit
-// integer.  That is, 10^kDigits10_64 <= 2^63 - 1 < 10^(kDigits10_64 + 1).
-const int kDigits10_64 = 18;
-
-// 10^n for everything that can be represented by a signed 64-bit integer.
-const std::int_fast64_t kExp10[kDigits10_64 + 1] = {
-    1,
-    10,
-    100,
-    1000,
-    10000,
-    100000,
-    1000000,
-    10000000,
-    100000000,
-    1000000000,
-    10000000000,
-    100000000000,
-    1000000000000,
-    10000000000000,
-    100000000000000,
-    1000000000000000,
-    10000000000000000,
-    100000000000000000,
-    1000000000000000000,
-};
-
-}  // namespace
-
-// Uses strftime(3) to format the given Time.  The following extended format
-// specifiers are also supported:
-//
-//   - %Ez  - RFC3339-compatible numeric UTC offset (+hh:mm or -hh:mm)
-//   - %E*z - Full-resolution numeric UTC offset (+hh:mm:ss or -hh:mm:ss)
-//   - %E#S - Seconds with # digits of fractional precision
-//   - %E*S - Seconds with full fractional precision (a literal '*')
-//   - %E4Y - Four-character years (-999 ... -001, 0000, 0001 ... 9999)
-//   - %ET  - The RFC3339 "date-time" separator "T"
-//
-// The standard specifiers from RFC3339_* (%Y, %m, %d, %H, %M, and %S) are
-// handled internally for performance reasons.  strftime(3) is slow due to
-// a POSIX requirement to respect changes to ${TZ}.
-//
-// The TZ/GNU %s extension is handled internally because strftime() has
-// to use mktime() to generate it, and that assumes the local time zone.
-//
-// We also handle the %z and %Z specifiers to accommodate platforms that do
-// not support the tm_gmtoff and tm_zone extensions to std::tm.
-//
-// Requires that zero() <= fs < seconds(1).
-std::string format(const std::string& format, const time_point<seconds>& tp,
-                   const detail::femtoseconds& fs, const time_zone& tz) {
-  std::string result;
-  result.reserve(format.size());  // A reasonable guess for the result size.
-  const time_zone::absolute_lookup al = tz.lookup(tp);
-  const std::tm tm = ToTM(al);
-
-  // Scratch buffer for internal conversions.
-  char buf[3 + kDigits10_64];  // enough for longest conversion
-  char* const ep = buf + sizeof(buf);
-  char* bp;  // works back from ep
-
-  // Maintain three, disjoint subsequences that span format.
-  //   [format.begin() ... pending) : already formatted into result
-  //   [pending ... cur) : formatting pending, but no special cases
-  //   [cur ... format.end()) : unexamined
-  // Initially, everything is in the unexamined part.
-  const char* pending = format.c_str();  // NUL terminated
-  const char* cur = pending;
-  const char* end = pending + format.length();
-
-  while (cur != end) {  // while something is unexamined
-    // Moves cur to the next percent sign.
-    const char* start = cur;
-    while (cur != end && *cur != '%') ++cur;
-
-    // If the new pending text is all ordinary, copy it out.
-    if (cur != start && pending == start) {
-      result.append(pending, static_cast<std::size_t>(cur - pending));
-      pending = start = cur;
-    }
-
-    // Span the sequential percent signs.
-    const char* percent = cur;
-    while (cur != end && *cur == '%') ++cur;
-
-    // If the new pending text is all percents, copy out one
-    // percent for every matched pair, then skip those pairs.
-    if (cur != start && pending == start) {
-      std::size_t escaped = static_cast<std::size_t>(cur - pending) / 2;
-      result.append(pending, escaped);
-      pending += escaped * 2;
-      // Also copy out a single trailing percent.
-      if (pending != cur && cur == end) {
-        result.push_back(*pending++);
-      }
-    }
-
-    // Loop unless we have an unescaped percent.
-    if (cur == end || (cur - percent) % 2 == 0) continue;
-
-    // Simple specifiers that we handle ourselves.
-    if (strchr("YmdeUuWwHMSzZs%", *cur)) {
-      if (cur - 1 != pending) {
-        FormatTM(&result, std::string(pending, cur - 1), tm);
-      }
-      switch (*cur) {
-        case 'Y':
-          // This avoids the tm.tm_year overflow problem for %Y, however
-          // tm.tm_year will still be used by other specifiers like %D.
-          bp = Format64(ep, 0, al.cs.year());
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'm':
-          bp = Format02d(ep, al.cs.month());
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'd':
-        case 'e':
-          bp = Format02d(ep, al.cs.day());
-          if (*cur == 'e' && *bp == '0') *bp = ' ';  // for Windows
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'U':
-          bp = Format02d(ep, ToWeek(civil_day(al.cs), weekday::sunday));
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'u':
-          bp = Format64(ep, 0, tm.tm_wday ? tm.tm_wday : 7);
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'W':
-          bp = Format02d(ep, ToWeek(civil_day(al.cs), weekday::monday));
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'w':
-          bp = Format64(ep, 0, tm.tm_wday);
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'H':
-          bp = Format02d(ep, al.cs.hour());
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'M':
-          bp = Format02d(ep, al.cs.minute());
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'S':
-          bp = Format02d(ep, al.cs.second());
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'z':
-          bp = FormatOffset(ep, al.offset, "");
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case 'Z':
-          result.append(al.abbr);
-          break;
-        case 's':
-          bp = Format64(ep, 0, ToUnixSeconds(tp));
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          break;
-        case '%':
-          result.push_back('%');
-          break;
-      }
-      pending = ++cur;
-      continue;
-    }
-
-    // More complex specifiers that we handle ourselves.
-    if (*cur == ':' && cur + 1 != end) {
-      if (*(cur + 1) == 'z') {
-        // Formats %:z.
-        if (cur - 1 != pending) {
-          FormatTM(&result, std::string(pending, cur - 1), tm);
-        }
-        bp = FormatOffset(ep, al.offset, ":");
-        result.append(bp, static_cast<std::size_t>(ep - bp));
-        pending = cur += 2;
-        continue;
-      }
-      if (*(cur + 1) == ':' && cur + 2 != end) {
-        if (*(cur + 2) == 'z') {
-          // Formats %::z.
-          if (cur - 1 != pending) {
-            FormatTM(&result, std::string(pending, cur - 1), tm);
-          }
-          bp = FormatOffset(ep, al.offset, ":*");
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          pending = cur += 3;
-          continue;
-        }
-        if (*(cur + 2) == ':' && cur + 3 != end) {
-          if (*(cur + 3) == 'z') {
-            // Formats %:::z.
-            if (cur - 1 != pending) {
-              FormatTM(&result, std::string(pending, cur - 1), tm);
-            }
-            bp = FormatOffset(ep, al.offset, ":*:");
-            result.append(bp, static_cast<std::size_t>(ep - bp));
-            pending = cur += 4;
-            continue;
-          }
-        }
-      }
-    }
-
-    // Loop if there is no E modifier.
-    if (*cur != 'E' || ++cur == end) continue;
-
-    // Format our extensions.
-    if (*cur == 'T') {
-      // Formats %ET.
-      if (cur - 2 != pending) {
-        FormatTM(&result, std::string(pending, cur - 2), tm);
-      }
-      result.append("T");
-      pending = ++cur;
-    } else if (*cur == 'z') {
-      // Formats %Ez.
-      if (cur - 2 != pending) {
-        FormatTM(&result, std::string(pending, cur - 2), tm);
-      }
-      bp = FormatOffset(ep, al.offset, ":");
-      result.append(bp, static_cast<std::size_t>(ep - bp));
-      pending = ++cur;
-    } else if (*cur == '*' && cur + 1 != end && *(cur + 1) == 'z') {
-      // Formats %E*z.
-      if (cur - 2 != pending) {
-        FormatTM(&result, std::string(pending, cur - 2), tm);
-      }
-      bp = FormatOffset(ep, al.offset, ":*");
-      result.append(bp, static_cast<std::size_t>(ep - bp));
-      pending = cur += 2;
-    } else if (*cur == '*' && cur + 1 != end &&
-               (*(cur + 1) == 'S' || *(cur + 1) == 'f')) {
-      // Formats %E*S or %E*F.
-      if (cur - 2 != pending) {
-        FormatTM(&result, std::string(pending, cur - 2), tm);
-      }
-      char* cp = ep;
-      bp = Format64(cp, 15, fs.count());
-      while (cp != bp && cp[-1] == '0') --cp;
-      switch (*(cur + 1)) {
-        case 'S':
-          if (cp != bp) *--bp = '.';
-          bp = Format02d(bp, al.cs.second());
-          break;
-        case 'f':
-          if (cp == bp) *--bp = '0';
-          break;
-      }
-      result.append(bp, static_cast<std::size_t>(cp - bp));
-      pending = cur += 2;
-    } else if (*cur == '4' && cur + 1 != end && *(cur + 1) == 'Y') {
-      // Formats %E4Y.
-      if (cur - 2 != pending) {
-        FormatTM(&result, std::string(pending, cur - 2), tm);
-      }
-      bp = Format64(ep, 4, al.cs.year());
-      result.append(bp, static_cast<std::size_t>(ep - bp));
-      pending = cur += 2;
-    } else if (std::isdigit(*cur)) {
-      // Possibly found %E#S or %E#f.
-      int n = 0;
-      if (const char* np = ParseInt(cur, 0, 0, 1024, &n)) {
-        if (*np == 'S' || *np == 'f') {
-          // Formats %E#S or %E#f.
-          if (cur - 2 != pending) {
-            FormatTM(&result, std::string(pending, cur - 2), tm);
-          }
-          bp = ep;
-          if (n > 0) {
-            if (n > kDigits10_64) n = kDigits10_64;
-            bp = Format64(bp, n,
-                          (n > 15) ? fs.count() * kExp10[n - 15]
-                                   : fs.count() / kExp10[15 - n]);
-            if (*np == 'S') *--bp = '.';
-          }
-          if (*np == 'S') bp = Format02d(bp, al.cs.second());
-          result.append(bp, static_cast<std::size_t>(ep - bp));
-          pending = cur = ++np;
-        }
-      }
-    }
-  }
-
-  // Formats any remaining data.
-  if (end != pending) {
-    FormatTM(&result, std::string(pending, end), tm);
-  }
-
-  return result;
-}
-
-namespace {
-
-const char* ParseOffset(const char* dp, const char* mode, int* offset) {
-  if (dp != nullptr) {
-    const char first = *dp++;
-    if (first == '+' || first == '-') {
-      char sep = mode[0];
-      int hours = 0;
-      int minutes = 0;
-      int seconds = 0;
-      const char* ap = ParseInt(dp, 2, 0, 23, &hours);
-      if (ap != nullptr && ap - dp == 2) {
-        dp = ap;
-        if (sep != '\0' && *ap == sep) ++ap;
-        const char* bp = ParseInt(ap, 2, 0, 59, &minutes);
-        if (bp != nullptr && bp - ap == 2) {
-          dp = bp;
-          if (sep != '\0' && *bp == sep) ++bp;
-          const char* cp = ParseInt(bp, 2, 0, 59, &seconds);
-          if (cp != nullptr && cp - bp == 2) dp = cp;
-        }
-        *offset = ((hours * 60 + minutes) * 60) + seconds;
-        if (first == '-') *offset = -*offset;
-      } else {
-        dp = nullptr;
-      }
-    } else if (first == 'Z' || first == 'z') {  // Zulu
-      *offset = 0;
-    } else {
-      dp = nullptr;
-    }
-  }
-  return dp;
-}
-
-const char* ParseZone(const char* dp, std::string* zone) {
-  zone->clear();
-  if (dp != nullptr) {
-    while (*dp != '\0' && !std::isspace(*dp)) zone->push_back(*dp++);
-    if (zone->empty()) dp = nullptr;
-  }
-  return dp;
-}
-
-const char* ParseSubSeconds(const char* dp, detail::femtoseconds* subseconds) {
-  if (dp != nullptr) {
-    std::int_fast64_t v = 0;
-    std::int_fast64_t exp = 0;
-    const char* const bp = dp;
-    while (const char* cp = strchr(kDigits, *dp)) {
-      int d = static_cast<int>(cp - kDigits);
-      if (d >= 10) break;
-      if (exp < 15) {
-        exp += 1;
-        v *= 10;
-        v += d;
-      }
-      ++dp;
-    }
-    if (dp != bp) {
-      v *= kExp10[15 - exp];
-      *subseconds = detail::femtoseconds(v);
-    } else {
-      dp = nullptr;
-    }
-  }
-  return dp;
-}
-
-// Parses a string into a std::tm using strptime(3).
-const char* ParseTM(const char* dp, const char* fmt, std::tm* tm) {
-  if (dp != nullptr) {
-    dp = strptime(dp, fmt, tm);
-  }
-  return dp;
-}
-
-// Sets year, tm_mon and tm_mday given the year, week_num, and tm_wday,
-// and the day on which weeks are defined to start.  Returns false if year
-// would need to move outside its bounds.
-bool FromWeek(int week_num, weekday week_start, year_t* year, std::tm* tm) {
-  const civil_year y(*year % 400);
-  civil_day cd = prev_weekday(y, week_start);  // week 0
-  cd = next_weekday(cd - 1, FromTmWday(tm->tm_wday)) + (week_num * 7);
-  if (const year_t shift = cd.year() - y.year()) {
-    if (shift > 0) {
-      if (*year > std::numeric_limits<year_t>::max() - shift) return false;
-    } else {
-      if (*year < std::numeric_limits<year_t>::min() - shift) return false;
-    }
-    *year += shift;
-  }
-  tm->tm_mon = cd.month() - 1;
-  tm->tm_mday = cd.day();
-  return true;
-}
-
-}  // namespace
-
-// Uses strptime(3) to parse the given input.  Supports the same extended
-// format specifiers as format(), although %E#S and %E*S are treated
-// identically (and similarly for %E#f and %E*f).  %Ez and %E*z also accept
-// the same inputs. %ET accepts either 'T' or 't'.
-//
-// The standard specifiers from RFC3339_* (%Y, %m, %d, %H, %M, and %S) are
-// handled internally so that we can normally avoid strptime() altogether
-// (which is particularly helpful when the native implementation is broken).
-//
-// The TZ/GNU %s extension is handled internally because strptime() has to
-// use localtime_r() to generate it, and that assumes the local time zone.
-//
-// We also handle the %z specifier to accommodate platforms that do not
-// support the tm_gmtoff extension to std::tm.  %Z is parsed but ignored.
-bool parse(const std::string& format, const std::string& input,
-           const time_zone& tz, time_point<seconds>* sec,
-           detail::femtoseconds* fs, std::string* err) {
-  // The unparsed input.
-  const char* data = input.c_str();  // NUL terminated
-
-  // Skips leading whitespace.
-  while (std::isspace(*data)) ++data;
-
-  const year_t kyearmax = std::numeric_limits<year_t>::max();
-  const year_t kyearmin = std::numeric_limits<year_t>::min();
-
-  // Sets default values for unspecified fields.
-  bool saw_year = false;
-  year_t year = 1970;
-  std::tm tm{};
-  tm.tm_year = 1970 - 1900;
-  tm.tm_mon = 1 - 1;  // Jan
-  tm.tm_mday = 1;
-  tm.tm_hour = 0;
-  tm.tm_min = 0;
-  tm.tm_sec = 0;
-  tm.tm_wday = 4;  // Thu
-  tm.tm_yday = 0;
-  tm.tm_isdst = 0;
-  auto subseconds = detail::femtoseconds::zero();
-  bool saw_offset = false;
-  int offset = 0;  // No offset from passed tz.
-  std::string zone = "UTC";
-
-  const char* fmt = format.c_str();  // NUL terminated
-  bool twelve_hour = false;
-  bool afternoon = false;
-  int week_num = -1;
-  weekday week_start = weekday::sunday;
-
-  bool saw_percent_s = false;
-  std::int_fast64_t percent_s = 0;
-
-  // Steps through format, one specifier at a time.
-  while (data != nullptr && *fmt != '\0') {
-    if (std::isspace(*fmt)) {
-      while (std::isspace(*data)) ++data;
-      while (std::isspace(*++fmt)) continue;
-      continue;
-    }
-
-    if (*fmt != '%') {
-      if (*data == *fmt) {
-        ++data;
-        ++fmt;
-      } else {
-        data = nullptr;
-      }
-      continue;
-    }
-
-    const char* percent = fmt;
-    if (*++fmt == '\0') {
-      data = nullptr;
-      continue;
-    }
-    switch (*fmt++) {
-      case 'Y':
-        // Symmetrically with FormatTime(), directly handing %Y avoids the
-        // tm.tm_year overflow problem.  However, tm.tm_year will still be
-        // used by other specifiers like %D.
-        data = ParseInt(data, 0, kyearmin, kyearmax, &year);
-        if (data != nullptr) saw_year = true;
-        continue;
-      case 'm':
-        data = ParseInt(data, 2, 1, 12, &tm.tm_mon);
-        if (data != nullptr) tm.tm_mon -= 1;
-        week_num = -1;
-        continue;
-      case 'd':
-      case 'e':
-        data = ParseInt(data, 2, 1, 31, &tm.tm_mday);
-        week_num = -1;
-        continue;
-      case 'U':
-        data = ParseInt(data, 0, 0, 53, &week_num);
-        week_start = weekday::sunday;
-        continue;
-      case 'W':
-        data = ParseInt(data, 0, 0, 53, &week_num);
-        week_start = weekday::monday;
-        continue;
-      case 'u':
-        data = ParseInt(data, 0, 1, 7, &tm.tm_wday);
-        if (data != nullptr) tm.tm_wday %= 7;
-        continue;
-      case 'w':
-        data = ParseInt(data, 0, 0, 6, &tm.tm_wday);
-        continue;
-      case 'H':
-        data = ParseInt(data, 2, 0, 23, &tm.tm_hour);
-        twelve_hour = false;
-        continue;
-      case 'M':
-        data = ParseInt(data, 2, 0, 59, &tm.tm_min);
-        continue;
-      case 'S':
-        data = ParseInt(data, 2, 0, 60, &tm.tm_sec);
-        continue;
-      case 'I':
-      case 'l':
-      case 'r':  // probably uses %I
-        twelve_hour = true;
-        break;
-      case 'R':  // uses %H
-      case 'T':  // uses %H
-      case 'c':  // probably uses %H
-      case 'X':  // probably uses %H
-        twelve_hour = false;
-        break;
-      case 'z':
-        data = ParseOffset(data, "", &offset);
-        if (data != nullptr) saw_offset = true;
-        continue;
-      case 'Z':  // ignored; zone abbreviations are ambiguous
-        data = ParseZone(data, &zone);
-        continue;
-      case 's':
-        data =
-            ParseInt(data, 0, std::numeric_limits<std::int_fast64_t>::min(),
-                     std::numeric_limits<std::int_fast64_t>::max(), &percent_s);
-        if (data != nullptr) saw_percent_s = true;
-        continue;
-      case ':':
-        if (fmt[0] == 'z' ||
-            (fmt[0] == ':' &&
-             (fmt[1] == 'z' || (fmt[1] == ':' && fmt[2] == 'z')))) {
-          data = ParseOffset(data, ":", &offset);
-          if (data != nullptr) saw_offset = true;
-          fmt += (fmt[0] == 'z') ? 1 : (fmt[1] == 'z') ? 2 : 3;
-          continue;
-        }
-        break;
-      case '%':
-        data = (*data == '%' ? data + 1 : nullptr);
-        continue;
-      case 'E':
-        if (fmt[0] == 'T') {
-          if (*data == 'T' || *data == 't') {
-            ++data;
-            ++fmt;
-          } else {
-            data = nullptr;
-          }
-          continue;
-        }
-        if (fmt[0] == 'z' || (fmt[0] == '*' && fmt[1] == 'z')) {
-          data = ParseOffset(data, ":", &offset);
-          if (data != nullptr) saw_offset = true;
-          fmt += (fmt[0] == 'z') ? 1 : 2;
-          continue;
-        }
-        if (fmt[0] == '*' && fmt[1] == 'S') {
-          data = ParseInt(data, 2, 0, 60, &tm.tm_sec);
-          if (data != nullptr && *data == '.') {
-            data = ParseSubSeconds(data + 1, &subseconds);
-          }
-          fmt += 2;
-          continue;
-        }
-        if (fmt[0] == '*' && fmt[1] == 'f') {
-          if (data != nullptr && std::isdigit(*data)) {
-            data = ParseSubSeconds(data, &subseconds);
-          }
-          fmt += 2;
-          continue;
-        }
-        if (fmt[0] == '4' && fmt[1] == 'Y') {
-          const char* bp = data;
-          data = ParseInt(data, 4, year_t{-999}, year_t{9999}, &year);
-          if (data != nullptr) {
-            if (data - bp == 4) {
-              saw_year = true;
-            } else {
-              data = nullptr;  // stopped too soon
-            }
-          }
-          fmt += 2;
-          continue;
-        }
-        if (std::isdigit(*fmt)) {
-          int n = 0;  // value ignored
-          if (const char* np = ParseInt(fmt, 0, 0, 1024, &n)) {
-            if (*np == 'S') {
-              data = ParseInt(data, 2, 0, 60, &tm.tm_sec);
-              if (data != nullptr && *data == '.') {
-                data = ParseSubSeconds(data + 1, &subseconds);
-              }
-              fmt = ++np;
-              continue;
-            }
-            if (*np == 'f') {
-              if (data != nullptr && std::isdigit(*data)) {
-                data = ParseSubSeconds(data, &subseconds);
-              }
-              fmt = ++np;
-              continue;
-            }
-          }
-        }
-        if (*fmt == 'c') twelve_hour = false;  // probably uses %H
-        if (*fmt == 'X') twelve_hour = false;  // probably uses %H
-        if (*fmt != '\0') ++fmt;
-        break;
-      case 'O':
-        if (*fmt == 'H') twelve_hour = false;
-        if (*fmt == 'I') twelve_hour = true;
-        if (*fmt != '\0') ++fmt;
-        break;
-    }
-
-    // Parses the current specifier.
-    const char* orig_data = data;
-    std::string spec(percent, static_cast<std::size_t>(fmt - percent));
-    data = ParseTM(data, spec.c_str(), &tm);
-
-    // If we successfully parsed %p we need to remember whether the result
-    // was AM or PM so that we can adjust tm_hour before time_zone::lookup().
-    // So reparse the input with a known AM hour, and check if it is shifted
-    // to a PM hour.
-    if (spec == "%p" && data != nullptr) {
-      std::string test_input = "1";
-      test_input.append(orig_data, static_cast<std::size_t>(data - orig_data));
-      const char* test_data = test_input.c_str();
-      std::tm tmp{};
-      ParseTM(test_data, "%I%p", &tmp);
-      afternoon = (tmp.tm_hour == 13);
-    }
-  }
-
-  // Adjust a 12-hour tm_hour value if it should be in the afternoon.
-  if (twelve_hour && afternoon && tm.tm_hour < 12) {
-    tm.tm_hour += 12;
-  }
-
-  if (data == nullptr) {
-    if (err != nullptr) *err = "Failed to parse input";
-    return false;
-  }
-
-  // Skip any remaining whitespace.
-  while (std::isspace(*data)) ++data;
-
-  // parse() must consume the entire input string.
-  if (*data != '\0') {
-    if (err != nullptr) *err = "Illegal trailing data in input string";
-    return false;
-  }
-
-  // If we saw %s then we ignore anything else and return that time.
-  if (saw_percent_s) {
-    *sec = FromUnixSeconds(percent_s);
-    *fs = detail::femtoseconds::zero();
-    return true;
-  }
-
-  // If we saw %z, %Ez, or %E*z then we want to interpret the parsed fields
-  // in UTC and then shift by that offset.  Otherwise we want to interpret
-  // the fields directly in the passed time_zone.
-  time_zone ptz = saw_offset ? utc_time_zone() : tz;
-
-  // Allows a leap second of 60 to normalize forward to the following ":00".
-  if (tm.tm_sec == 60) {
-    tm.tm_sec -= 1;
-    offset -= 1;
-    subseconds = detail::femtoseconds::zero();
-  }
-
-  if (!saw_year) {
-    year = year_t{tm.tm_year};
-    if (year > kyearmax - 1900) {
-      // Platform-dependent, maybe unreachable.
-      if (err != nullptr) *err = "Out-of-range year";
-      return false;
-    }
-    year += 1900;
-  }
-
-  // Compute year, tm.tm_mon and tm.tm_mday if we parsed a week number.
-  if (week_num != -1) {
-    if (!FromWeek(week_num, week_start, &year, &tm)) {
-      if (err != nullptr) *err = "Out-of-range field";
-      return false;
-    }
-  }
-
-  const int month = tm.tm_mon + 1;
-  civil_second cs(year, month, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
-
-  // parse() should not allow normalization. Due to the restricted field
-  // ranges above (see ParseInt()), the only possibility is for days to roll
-  // into months. That is, parsing "Sep 31" should not produce "Oct 1".
-  if (cs.month() != month || cs.day() != tm.tm_mday) {
-    if (err != nullptr) *err = "Out-of-range field";
-    return false;
-  }
-
-  // Accounts for the offset adjustment before converting to absolute time.
-  if ((offset < 0 && cs > civil_second::max() + offset) ||
-      (offset > 0 && cs < civil_second::min() + offset)) {
-    if (err != nullptr) *err = "Out-of-range field";
-    return false;
-  }
-  cs -= offset;
-
-  const auto tp = ptz.lookup(cs).pre;
-  // Checks for overflow/underflow and returns an error as necessary.
-  if (tp == time_point<seconds>::max()) {
-    const auto al = ptz.lookup(time_point<seconds>::max());
-    if (cs > al.cs) {
-      if (err != nullptr) *err = "Out-of-range field";
-      return false;
-    }
-  }
-  if (tp == time_point<seconds>::min()) {
-    const auto al = ptz.lookup(time_point<seconds>::min());
-    if (cs < al.cs) {
-      if (err != nullptr) *err = "Out-of-range field";
-      return false;
-    }
-  }
-
-  *sec = tp;
-  *fs = subseconds;
-  return true;
-}
-
-}  // namespace detail
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format_test.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format_test.cc
deleted file mode 100644
index a11f93e2a597..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_format_test.cc
+++ /dev/null
@@ -1,1603 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include <chrono>
-#include <iomanip>
-#include <sstream>
-#include <string>
-
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-namespace chrono = std::chrono;
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-// This helper is a macro so that failed expectations show up with the
-// correct line numbers.
-#define ExpectTime(tp, tz, y, m, d, hh, mm, ss, off, isdst, zone) \
-  do {                                                            \
-    time_zone::absolute_lookup al = tz.lookup(tp);                \
-    EXPECT_EQ(y, al.cs.year());                                   \
-    EXPECT_EQ(m, al.cs.month());                                  \
-    EXPECT_EQ(d, al.cs.day());                                    \
-    EXPECT_EQ(hh, al.cs.hour());                                  \
-    EXPECT_EQ(mm, al.cs.minute());                                \
-    EXPECT_EQ(ss, al.cs.second());                                \
-    EXPECT_EQ(off, al.offset);                                    \
-    EXPECT_TRUE(isdst == al.is_dst);                              \
-    EXPECT_STREQ(zone, al.abbr);                                  \
-  } while (0)
-
-const char RFC3339_full[] = "%Y-%m-%d%ET%H:%M:%E*S%Ez";
-const char RFC3339_sec[] = "%Y-%m-%d%ET%H:%M:%S%Ez";
-
-const char RFC1123_full[] = "%a, %d %b %Y %H:%M:%S %z";
-const char RFC1123_no_wday[] = "%d %b %Y %H:%M:%S %z";
-
-// A helper that tests the given format specifier by itself, and with leading
-// and trailing characters.  For example: TestFormatSpecifier(tp, "%a", "Thu").
-template <typename D>
-void TestFormatSpecifier(time_point<D> tp, time_zone tz, const std::string& fmt,
-                         const std::string& ans) {
-  EXPECT_EQ(ans, format(fmt, tp, tz)) << fmt;
-  EXPECT_EQ("xxx " + ans, format("xxx " + fmt, tp, tz));
-  EXPECT_EQ(ans + " yyy", format(fmt + " yyy", tp, tz));
-  EXPECT_EQ("xxx " + ans + " yyy", format("xxx " + fmt + " yyy", tp, tz));
-}
-
-}  // namespace
-
-//
-// Testing format()
-//
-
-TEST(Format, TimePointResolution) {
-  const char kFmt[] = "%H:%M:%E*S";
-  const time_zone utc = utc_time_zone();
-  const time_point<chrono::nanoseconds> t0 =
-      chrono::system_clock::from_time_t(1420167845) +
-      chrono::milliseconds(123) + chrono::microseconds(456) +
-      chrono::nanoseconds(789);
-  EXPECT_EQ(
-      "03:04:05.123456789",
-      format(kFmt, chrono::time_point_cast<chrono::nanoseconds>(t0), utc));
-  EXPECT_EQ(
-      "03:04:05.123456",
-      format(kFmt, chrono::time_point_cast<chrono::microseconds>(t0), utc));
-  EXPECT_EQ(
-      "03:04:05.123",
-      format(kFmt, chrono::time_point_cast<chrono::milliseconds>(t0), utc));
-  EXPECT_EQ("03:04:05",
-            format(kFmt, chrono::time_point_cast<chrono::seconds>(t0), utc));
-  EXPECT_EQ(
-      "03:04:05",
-      format(kFmt,
-             chrono::time_point_cast<absl::time_internal::cctz::seconds>(t0),
-             utc));
-  EXPECT_EQ("03:04:00",
-            format(kFmt, chrono::time_point_cast<chrono::minutes>(t0), utc));
-  EXPECT_EQ("03:00:00",
-            format(kFmt, chrono::time_point_cast<chrono::hours>(t0), utc));
-}
-
-TEST(Format, TimePointExtendedResolution) {
-  const char kFmt[] = "%H:%M:%E*S";
-  const time_zone utc = utc_time_zone();
-  const time_point<absl::time_internal::cctz::seconds> tp =
-      chrono::time_point_cast<absl::time_internal::cctz::seconds>(
-          chrono::system_clock::from_time_t(0)) +
-      chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56);
-
-  EXPECT_EQ(
-      "12:34:56.123456789012345",
-      detail::format(kFmt, tp, detail::femtoseconds(123456789012345), utc));
-  EXPECT_EQ(
-      "12:34:56.012345678901234",
-      detail::format(kFmt, tp, detail::femtoseconds(12345678901234), utc));
-  EXPECT_EQ("12:34:56.001234567890123",
-            detail::format(kFmt, tp, detail::femtoseconds(1234567890123), utc));
-  EXPECT_EQ("12:34:56.000123456789012",
-            detail::format(kFmt, tp, detail::femtoseconds(123456789012), utc));
-
-  EXPECT_EQ("12:34:56.000000000000123",
-            detail::format(kFmt, tp, detail::femtoseconds(123), utc));
-  EXPECT_EQ("12:34:56.000000000000012",
-            detail::format(kFmt, tp, detail::femtoseconds(12), utc));
-  EXPECT_EQ("12:34:56.000000000000001",
-            detail::format(kFmt, tp, detail::femtoseconds(1), utc));
-}
-
-TEST(Format, Basics) {
-  time_zone tz = utc_time_zone();
-  time_point<chrono::nanoseconds> tp = chrono::system_clock::from_time_t(0);
-
-  // Starts with a couple basic edge cases.
-  EXPECT_EQ("", format("", tp, tz));
-  EXPECT_EQ(" ", format(" ", tp, tz));
-  EXPECT_EQ("  ", format("  ", tp, tz));
-  EXPECT_EQ("xxx", format("xxx", tp, tz));
-  std::string big(128, 'x');
-  EXPECT_EQ(big, format(big, tp, tz));
-  // Cause the 1024-byte buffer to grow.
-  std::string bigger(100000, 'x');
-  EXPECT_EQ(bigger, format(bigger, tp, tz));
-
-  tp += chrono::hours(13) + chrono::minutes(4) + chrono::seconds(5);
-  tp += chrono::milliseconds(6) + chrono::microseconds(7) +
-        chrono::nanoseconds(8);
-  EXPECT_EQ("1970-01-01", format("%Y-%m-%d", tp, tz));
-  EXPECT_EQ("13:04:05", format("%H:%M:%S", tp, tz));
-  EXPECT_EQ("13:04:05.006", format("%H:%M:%E3S", tp, tz));
-  EXPECT_EQ("13:04:05.006007", format("%H:%M:%E6S", tp, tz));
-  EXPECT_EQ("13:04:05.006007008", format("%H:%M:%E9S", tp, tz));
-}
-
-TEST(Format, PosixConversions) {
-  const time_zone tz = utc_time_zone();
-  auto tp = chrono::system_clock::from_time_t(0);
-
-  TestFormatSpecifier(tp, tz, "%d", "01");
-  TestFormatSpecifier(tp, tz, "%e", " 1");  // extension but internal support
-  TestFormatSpecifier(tp, tz, "%H", "00");
-  TestFormatSpecifier(tp, tz, "%I", "12");
-  TestFormatSpecifier(tp, tz, "%j", "001");
-  TestFormatSpecifier(tp, tz, "%m", "01");
-  TestFormatSpecifier(tp, tz, "%M", "00");
-  TestFormatSpecifier(tp, tz, "%S", "00");
-  TestFormatSpecifier(tp, tz, "%U", "00");
-#if !defined(__EMSCRIPTEN__)
-  TestFormatSpecifier(tp, tz, "%w", "4");  // 4=Thursday
-#endif
-  TestFormatSpecifier(tp, tz, "%W", "00");
-  TestFormatSpecifier(tp, tz, "%y", "70");
-  TestFormatSpecifier(tp, tz, "%Y", "1970");
-  TestFormatSpecifier(tp, tz, "%z", "+0000");
-  TestFormatSpecifier(tp, tz, "%Z", "UTC");
-  TestFormatSpecifier(tp, tz, "%%", "%");
-
-#if defined(__linux__)
-  // SU/C99/TZ extensions
-  TestFormatSpecifier(tp, tz, "%C", "19");
-  TestFormatSpecifier(tp, tz, "%D", "01/01/70");
-  TestFormatSpecifier(tp, tz, "%F", "1970-01-01");
-  TestFormatSpecifier(tp, tz, "%g", "70");
-  TestFormatSpecifier(tp, tz, "%G", "1970");
-  TestFormatSpecifier(tp, tz, "%k", " 0");
-  TestFormatSpecifier(tp, tz, "%l", "12");
-  TestFormatSpecifier(tp, tz, "%n", "\n");
-  TestFormatSpecifier(tp, tz, "%R", "00:00");
-  TestFormatSpecifier(tp, tz, "%t", "\t");
-  TestFormatSpecifier(tp, tz, "%T", "00:00:00");
-  TestFormatSpecifier(tp, tz, "%u", "4");  // 4=Thursday
-  TestFormatSpecifier(tp, tz, "%V", "01");
-  TestFormatSpecifier(tp, tz, "%s", "0");
-#endif
-}
-
-TEST(Format, LocaleSpecific) {
-  const time_zone tz = utc_time_zone();
-  auto tp = chrono::system_clock::from_time_t(0);
-
-  TestFormatSpecifier(tp, tz, "%a", "Thu");
-  TestFormatSpecifier(tp, tz, "%A", "Thursday");
-  TestFormatSpecifier(tp, tz, "%b", "Jan");
-  TestFormatSpecifier(tp, tz, "%B", "January");
-
-  // %c should at least produce the numeric year and time-of-day.
-  const std::string s = format("%c", tp, utc_time_zone());
-  EXPECT_THAT(s, testing::HasSubstr("1970"));
-  EXPECT_THAT(s, testing::HasSubstr("00:00:00"));
-
-  TestFormatSpecifier(tp, tz, "%p", "AM");
-  TestFormatSpecifier(tp, tz, "%x", "01/01/70");
-  TestFormatSpecifier(tp, tz, "%X", "00:00:00");
-
-#if defined(__linux__)
-  // SU/C99/TZ extensions
-  TestFormatSpecifier(tp, tz, "%h", "Jan");  // Same as %b
-  TestFormatSpecifier(tp, tz, "%P", "am");
-  TestFormatSpecifier(tp, tz, "%r", "12:00:00 AM");
-
-  // Modified conversion specifiers %E_
-  TestFormatSpecifier(tp, tz, "%Ec", "Thu Jan  1 00:00:00 1970");
-  TestFormatSpecifier(tp, tz, "%EC", "19");
-  TestFormatSpecifier(tp, tz, "%Ex", "01/01/70");
-  TestFormatSpecifier(tp, tz, "%EX", "00:00:00");
-  TestFormatSpecifier(tp, tz, "%Ey", "70");
-  TestFormatSpecifier(tp, tz, "%EY", "1970");
-
-  // Modified conversion specifiers %O_
-  TestFormatSpecifier(tp, tz, "%Od", "01");
-  TestFormatSpecifier(tp, tz, "%Oe", " 1");
-  TestFormatSpecifier(tp, tz, "%OH", "00");
-  TestFormatSpecifier(tp, tz, "%OI", "12");
-  TestFormatSpecifier(tp, tz, "%Om", "01");
-  TestFormatSpecifier(tp, tz, "%OM", "00");
-  TestFormatSpecifier(tp, tz, "%OS", "00");
-  TestFormatSpecifier(tp, tz, "%Ou", "4");  // 4=Thursday
-  TestFormatSpecifier(tp, tz, "%OU", "00");
-  TestFormatSpecifier(tp, tz, "%OV", "01");
-  TestFormatSpecifier(tp, tz, "%Ow", "4");  // 4=Thursday
-  TestFormatSpecifier(tp, tz, "%OW", "00");
-  TestFormatSpecifier(tp, tz, "%Oy", "70");
-#endif
-}
-
-TEST(Format, Escaping) {
-  const time_zone tz = utc_time_zone();
-  auto tp = chrono::system_clock::from_time_t(0);
-
-  TestFormatSpecifier(tp, tz, "%%", "%");
-  TestFormatSpecifier(tp, tz, "%%a", "%a");
-  TestFormatSpecifier(tp, tz, "%%b", "%b");
-  TestFormatSpecifier(tp, tz, "%%Ea", "%Ea");
-  TestFormatSpecifier(tp, tz, "%%Es", "%Es");
-  TestFormatSpecifier(tp, tz, "%%E3S", "%E3S");
-  TestFormatSpecifier(tp, tz, "%%OS", "%OS");
-  TestFormatSpecifier(tp, tz, "%%O3S", "%O3S");
-
-  // Multiple levels of escaping.
-  TestFormatSpecifier(tp, tz, "%%%Y", "%1970");
-  TestFormatSpecifier(tp, tz, "%%%E3S", "%00.000");
-  TestFormatSpecifier(tp, tz, "%%%%E3S", "%%E3S");
-}
-
-TEST(Format, ExtendedSeconds) {
-  const time_zone tz = utc_time_zone();
-
-  // No subseconds.
-  time_point<chrono::nanoseconds> tp = chrono::system_clock::from_time_t(0);
-  tp += chrono::seconds(5);
-  EXPECT_EQ("05", format("%E*S", tp, tz));
-  EXPECT_EQ("05", format("%E0S", tp, tz));
-  EXPECT_EQ("05.0", format("%E1S", tp, tz));
-  EXPECT_EQ("05.00", format("%E2S", tp, tz));
-  EXPECT_EQ("05.000", format("%E3S", tp, tz));
-  EXPECT_EQ("05.0000", format("%E4S", tp, tz));
-  EXPECT_EQ("05.00000", format("%E5S", tp, tz));
-  EXPECT_EQ("05.000000", format("%E6S", tp, tz));
-  EXPECT_EQ("05.0000000", format("%E7S", tp, tz));
-  EXPECT_EQ("05.00000000", format("%E8S", tp, tz));
-  EXPECT_EQ("05.000000000", format("%E9S", tp, tz));
-  EXPECT_EQ("05.0000000000", format("%E10S", tp, tz));
-  EXPECT_EQ("05.00000000000", format("%E11S", tp, tz));
-  EXPECT_EQ("05.000000000000", format("%E12S", tp, tz));
-  EXPECT_EQ("05.0000000000000", format("%E13S", tp, tz));
-  EXPECT_EQ("05.00000000000000", format("%E14S", tp, tz));
-  EXPECT_EQ("05.000000000000000", format("%E15S", tp, tz));
-
-  // With subseconds.
-  tp += chrono::milliseconds(6) + chrono::microseconds(7) +
-        chrono::nanoseconds(8);
-  EXPECT_EQ("05.006007008", format("%E*S", tp, tz));
-  EXPECT_EQ("05", format("%E0S", tp, tz));
-  EXPECT_EQ("05.0", format("%E1S", tp, tz));
-  EXPECT_EQ("05.00", format("%E2S", tp, tz));
-  EXPECT_EQ("05.006", format("%E3S", tp, tz));
-  EXPECT_EQ("05.0060", format("%E4S", tp, tz));
-  EXPECT_EQ("05.00600", format("%E5S", tp, tz));
-  EXPECT_EQ("05.006007", format("%E6S", tp, tz));
-  EXPECT_EQ("05.0060070", format("%E7S", tp, tz));
-  EXPECT_EQ("05.00600700", format("%E8S", tp, tz));
-  EXPECT_EQ("05.006007008", format("%E9S", tp, tz));
-  EXPECT_EQ("05.0060070080", format("%E10S", tp, tz));
-  EXPECT_EQ("05.00600700800", format("%E11S", tp, tz));
-  EXPECT_EQ("05.006007008000", format("%E12S", tp, tz));
-  EXPECT_EQ("05.0060070080000", format("%E13S", tp, tz));
-  EXPECT_EQ("05.00600700800000", format("%E14S", tp, tz));
-  EXPECT_EQ("05.006007008000000", format("%E15S", tp, tz));
-
-  // Times before the Unix epoch.
-  tp = chrono::system_clock::from_time_t(0) + chrono::microseconds(-1);
-  EXPECT_EQ("1969-12-31 23:59:59.999999",
-            format("%Y-%m-%d %H:%M:%E*S", tp, tz));
-
-  // Here is a "%E*S" case we got wrong for a while.  While the first
-  // instant below is correctly rendered as "...:07.333304", the second
-  // one used to appear as "...:07.33330499999999999".
-  tp = chrono::system_clock::from_time_t(0) +
-       chrono::microseconds(1395024427333304);
-  EXPECT_EQ("2014-03-17 02:47:07.333304",
-            format("%Y-%m-%d %H:%M:%E*S", tp, tz));
-  tp += chrono::microseconds(1);
-  EXPECT_EQ("2014-03-17 02:47:07.333305",
-            format("%Y-%m-%d %H:%M:%E*S", tp, tz));
-}
-
-TEST(Format, ExtendedSubeconds) {
-  const time_zone tz = utc_time_zone();
-
-  // No subseconds.
-  time_point<chrono::nanoseconds> tp = chrono::system_clock::from_time_t(0);
-  tp += chrono::seconds(5);
-  EXPECT_EQ("0", format("%E*f", tp, tz));
-  EXPECT_EQ("", format("%E0f", tp, tz));
-  EXPECT_EQ("0", format("%E1f", tp, tz));
-  EXPECT_EQ("00", format("%E2f", tp, tz));
-  EXPECT_EQ("000", format("%E3f", tp, tz));
-  EXPECT_EQ("0000", format("%E4f", tp, tz));
-  EXPECT_EQ("00000", format("%E5f", tp, tz));
-  EXPECT_EQ("000000", format("%E6f", tp, tz));
-  EXPECT_EQ("0000000", format("%E7f", tp, tz));
-  EXPECT_EQ("00000000", format("%E8f", tp, tz));
-  EXPECT_EQ("000000000", format("%E9f", tp, tz));
-  EXPECT_EQ("0000000000", format("%E10f", tp, tz));
-  EXPECT_EQ("00000000000", format("%E11f", tp, tz));
-  EXPECT_EQ("000000000000", format("%E12f", tp, tz));
-  EXPECT_EQ("0000000000000", format("%E13f", tp, tz));
-  EXPECT_EQ("00000000000000", format("%E14f", tp, tz));
-  EXPECT_EQ("000000000000000", format("%E15f", tp, tz));
-
-  // With subseconds.
-  tp += chrono::milliseconds(6) + chrono::microseconds(7) +
-        chrono::nanoseconds(8);
-  EXPECT_EQ("006007008", format("%E*f", tp, tz));
-  EXPECT_EQ("", format("%E0f", tp, tz));
-  EXPECT_EQ("0", format("%E1f", tp, tz));
-  EXPECT_EQ("00", format("%E2f", tp, tz));
-  EXPECT_EQ("006", format("%E3f", tp, tz));
-  EXPECT_EQ("0060", format("%E4f", tp, tz));
-  EXPECT_EQ("00600", format("%E5f", tp, tz));
-  EXPECT_EQ("006007", format("%E6f", tp, tz));
-  EXPECT_EQ("0060070", format("%E7f", tp, tz));
-  EXPECT_EQ("00600700", format("%E8f", tp, tz));
-  EXPECT_EQ("006007008", format("%E9f", tp, tz));
-  EXPECT_EQ("0060070080", format("%E10f", tp, tz));
-  EXPECT_EQ("00600700800", format("%E11f", tp, tz));
-  EXPECT_EQ("006007008000", format("%E12f", tp, tz));
-  EXPECT_EQ("0060070080000", format("%E13f", tp, tz));
-  EXPECT_EQ("00600700800000", format("%E14f", tp, tz));
-  EXPECT_EQ("006007008000000", format("%E15f", tp, tz));
-
-  // Times before the Unix epoch.
-  tp = chrono::system_clock::from_time_t(0) + chrono::microseconds(-1);
-  EXPECT_EQ("1969-12-31 23:59:59.999999",
-            format("%Y-%m-%d %H:%M:%S.%E*f", tp, tz));
-
-  // Here is a "%E*S" case we got wrong for a while.  While the first
-  // instant below is correctly rendered as "...:07.333304", the second
-  // one used to appear as "...:07.33330499999999999".
-  tp = chrono::system_clock::from_time_t(0) +
-       chrono::microseconds(1395024427333304);
-  EXPECT_EQ("2014-03-17 02:47:07.333304",
-            format("%Y-%m-%d %H:%M:%S.%E*f", tp, tz));
-  tp += chrono::microseconds(1);
-  EXPECT_EQ("2014-03-17 02:47:07.333305",
-            format("%Y-%m-%d %H:%M:%S.%E*f", tp, tz));
-}
-
-TEST(Format, CompareExtendSecondsVsSubseconds) {
-  const time_zone tz = utc_time_zone();
-
-  // This test case illustrates the differences/similarities between:
-  //   fmt_A: %E<prec>S
-  //   fmt_B: %S.%E<prec>f
-  auto fmt_A = [](const std::string& prec) { return "%E" + prec + "S"; };
-  auto fmt_B = [](const std::string& prec) { return "%S.%E" + prec + "f"; };
-
-  // No subseconds:
-  time_point<chrono::nanoseconds> tp = chrono::system_clock::from_time_t(0);
-  tp += chrono::seconds(5);
-  // ... %E*S and %S.%E*f are different.
-  EXPECT_EQ("05", format(fmt_A("*"), tp, tz));
-  EXPECT_EQ("05.0", format(fmt_B("*"), tp, tz));
-  // ... %E0S and %S.%E0f are different.
-  EXPECT_EQ("05", format(fmt_A("0"), tp, tz));
-  EXPECT_EQ("05.", format(fmt_B("0"), tp, tz));
-  // ... %E<prec>S and %S.%E<prec>f are the same for prec in [1:15].
-  for (int prec = 1; prec <= 15; ++prec) {
-    const std::string a = format(fmt_A(std::to_string(prec)), tp, tz);
-    const std::string b = format(fmt_B(std::to_string(prec)), tp, tz);
-    EXPECT_EQ(a, b) << "prec=" << prec;
-  }
-
-  // With subseconds:
-  // ... %E*S and %S.%E*f are the same.
-  tp += chrono::milliseconds(6) + chrono::microseconds(7) +
-        chrono::nanoseconds(8);
-  EXPECT_EQ("05.006007008", format(fmt_A("*"), tp, tz));
-  EXPECT_EQ("05.006007008", format(fmt_B("*"), tp, tz));
-  // ... %E0S and %S.%E0f are different.
-  EXPECT_EQ("05", format(fmt_A("0"), tp, tz));
-  EXPECT_EQ("05.", format(fmt_B("0"), tp, tz));
-  // ... %E<prec>S and %S.%E<prec>f are the same for prec in [1:15].
-  for (int prec = 1; prec <= 15; ++prec) {
-    const std::string a = format(fmt_A(std::to_string(prec)), tp, tz);
-    const std::string b = format(fmt_B(std::to_string(prec)), tp, tz);
-    EXPECT_EQ(a, b) << "prec=" << prec;
-  }
-}
-
-TEST(Format, ExtendedOffset) {
-  const auto tp = chrono::system_clock::from_time_t(0);
-
-  auto tz = fixed_time_zone(absl::time_internal::cctz::seconds::zero());
-  TestFormatSpecifier(tp, tz, "%z", "+0000");
-  TestFormatSpecifier(tp, tz, "%:z", "+00:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "+00:00");
-
-  tz = fixed_time_zone(chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "+0000");
-  TestFormatSpecifier(tp, tz, "%:z", "+00:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "+00:00");
-
-  tz = fixed_time_zone(-chrono::seconds(56));  // NOTE: +00:00
-  TestFormatSpecifier(tp, tz, "%z", "+0000");
-  TestFormatSpecifier(tp, tz, "%:z", "+00:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "+00:00");
-
-  tz = fixed_time_zone(chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%z", "+0034");
-  TestFormatSpecifier(tp, tz, "%:z", "+00:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "+00:34");
-
-  tz = fixed_time_zone(-chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%z", "-0034");
-  TestFormatSpecifier(tp, tz, "%:z", "-00:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "-00:34");
-
-  tz = fixed_time_zone(chrono::minutes(34) + chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "+0034");
-  TestFormatSpecifier(tp, tz, "%:z", "+00:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "+00:34");
-
-  tz = fixed_time_zone(-chrono::minutes(34) - chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "-0034");
-  TestFormatSpecifier(tp, tz, "%:z", "-00:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "-00:34");
-
-  tz = fixed_time_zone(chrono::hours(12));
-  TestFormatSpecifier(tp, tz, "%z", "+1200");
-  TestFormatSpecifier(tp, tz, "%:z", "+12:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "+12:00");
-
-  tz = fixed_time_zone(-chrono::hours(12));
-  TestFormatSpecifier(tp, tz, "%z", "-1200");
-  TestFormatSpecifier(tp, tz, "%:z", "-12:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "-12:00");
-
-  tz = fixed_time_zone(chrono::hours(12) + chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "+1200");
-  TestFormatSpecifier(tp, tz, "%:z", "+12:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "+12:00");
-
-  tz = fixed_time_zone(-chrono::hours(12) - chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "-1200");
-  TestFormatSpecifier(tp, tz, "%:z", "-12:00");
-  TestFormatSpecifier(tp, tz, "%Ez", "-12:00");
-
-  tz = fixed_time_zone(chrono::hours(12) + chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%z", "+1234");
-  TestFormatSpecifier(tp, tz, "%:z", "+12:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "+12:34");
-
-  tz = fixed_time_zone(-chrono::hours(12) - chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%z", "-1234");
-  TestFormatSpecifier(tp, tz, "%:z", "-12:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "-12:34");
-
-  tz = fixed_time_zone(chrono::hours(12) + chrono::minutes(34) +
-                       chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "+1234");
-  TestFormatSpecifier(tp, tz, "%:z", "+12:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "+12:34");
-
-  tz = fixed_time_zone(-chrono::hours(12) - chrono::minutes(34) -
-                       chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%z", "-1234");
-  TestFormatSpecifier(tp, tz, "%:z", "-12:34");
-  TestFormatSpecifier(tp, tz, "%Ez", "-12:34");
-}
-
-TEST(Format, ExtendedSecondOffset) {
-  const auto tp = chrono::system_clock::from_time_t(0);
-
-  auto tz = fixed_time_zone(absl::time_internal::cctz::seconds::zero());
-  TestFormatSpecifier(tp, tz, "%E*z", "+00:00:00");
-  TestFormatSpecifier(tp, tz, "%::z", "+00:00:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "+00");
-
-  tz = fixed_time_zone(chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "+00:00:56");
-  TestFormatSpecifier(tp, tz, "%::z", "+00:00:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "+00:00:56");
-
-  tz = fixed_time_zone(-chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "-00:00:56");
-  TestFormatSpecifier(tp, tz, "%::z", "-00:00:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "-00:00:56");
-
-  tz = fixed_time_zone(chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%E*z", "+00:34:00");
-  TestFormatSpecifier(tp, tz, "%::z", "+00:34:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "+00:34");
-
-  tz = fixed_time_zone(-chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%E*z", "-00:34:00");
-  TestFormatSpecifier(tp, tz, "%::z", "-00:34:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "-00:34");
-
-  tz = fixed_time_zone(chrono::minutes(34) + chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "+00:34:56");
-  TestFormatSpecifier(tp, tz, "%::z", "+00:34:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "+00:34:56");
-
-  tz = fixed_time_zone(-chrono::minutes(34) - chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "-00:34:56");
-  TestFormatSpecifier(tp, tz, "%::z", "-00:34:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "-00:34:56");
-
-  tz = fixed_time_zone(chrono::hours(12));
-  TestFormatSpecifier(tp, tz, "%E*z", "+12:00:00");
-  TestFormatSpecifier(tp, tz, "%::z", "+12:00:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "+12");
-
-  tz = fixed_time_zone(-chrono::hours(12));
-  TestFormatSpecifier(tp, tz, "%E*z", "-12:00:00");
-  TestFormatSpecifier(tp, tz, "%::z", "-12:00:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "-12");
-
-  tz = fixed_time_zone(chrono::hours(12) + chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "+12:00:56");
-  TestFormatSpecifier(tp, tz, "%::z", "+12:00:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "+12:00:56");
-
-  tz = fixed_time_zone(-chrono::hours(12) - chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "-12:00:56");
-  TestFormatSpecifier(tp, tz, "%::z", "-12:00:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "-12:00:56");
-
-  tz = fixed_time_zone(chrono::hours(12) + chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%E*z", "+12:34:00");
-  TestFormatSpecifier(tp, tz, "%::z", "+12:34:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "+12:34");
-
-  tz = fixed_time_zone(-chrono::hours(12) - chrono::minutes(34));
-  TestFormatSpecifier(tp, tz, "%E*z", "-12:34:00");
-  TestFormatSpecifier(tp, tz, "%::z", "-12:34:00");
-  TestFormatSpecifier(tp, tz, "%:::z", "-12:34");
-
-  tz = fixed_time_zone(chrono::hours(12) + chrono::minutes(34) +
-                       chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "+12:34:56");
-  TestFormatSpecifier(tp, tz, "%::z", "+12:34:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "+12:34:56");
-
-  tz = fixed_time_zone(-chrono::hours(12) - chrono::minutes(34) -
-                       chrono::seconds(56));
-  TestFormatSpecifier(tp, tz, "%E*z", "-12:34:56");
-  TestFormatSpecifier(tp, tz, "%::z", "-12:34:56");
-  TestFormatSpecifier(tp, tz, "%:::z", "-12:34:56");
-}
-
-TEST(Format, ExtendedYears) {
-  const time_zone utc = utc_time_zone();
-  const char e4y_fmt[] = "%E4Y%m%d";  // no separators
-
-  // %E4Y zero-pads the year to produce at least 4 chars, including the sign.
-  auto tp = convert(civil_second(-999, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("-9991127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(-99, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("-0991127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(-9, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("-0091127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(-1, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("-0011127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(0, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("00001127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(1, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("00011127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(9, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("00091127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(99, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("00991127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(999, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("09991127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(9999, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("99991127", format(e4y_fmt, tp, utc));
-
-  // When the year is outside [-999:9999], more than 4 chars are produced.
-  tp = convert(civil_second(-1000, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("-10001127", format(e4y_fmt, tp, utc));
-  tp = convert(civil_second(10000, 11, 27, 0, 0, 0), utc);
-  EXPECT_EQ("100001127", format(e4y_fmt, tp, utc));
-}
-
-TEST(Format, RFC3339Format) {
-  time_zone tz;
-  EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz));
-
-  time_point<chrono::nanoseconds> tp =
-      convert(civil_second(1977, 6, 28, 9, 8, 7), tz);
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::milliseconds(100);
-  EXPECT_EQ("1977-06-28T09:08:07.1-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::milliseconds(20);
-  EXPECT_EQ("1977-06-28T09:08:07.12-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::milliseconds(3);
-  EXPECT_EQ("1977-06-28T09:08:07.123-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::microseconds(400);
-  EXPECT_EQ("1977-06-28T09:08:07.1234-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::microseconds(50);
-  EXPECT_EQ("1977-06-28T09:08:07.12345-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::microseconds(6);
-  EXPECT_EQ("1977-06-28T09:08:07.123456-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::nanoseconds(700);
-  EXPECT_EQ("1977-06-28T09:08:07.1234567-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::nanoseconds(80);
-  EXPECT_EQ("1977-06-28T09:08:07.12345678-07:00", format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-
-  tp += chrono::nanoseconds(9);
-  EXPECT_EQ("1977-06-28T09:08:07.123456789-07:00",
-            format(RFC3339_full, tp, tz));
-  EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz));
-}
-
-TEST(Format, RFC1123Format) {  // locale specific
-  time_zone tz;
-  EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz));
-
-  auto tp = convert(civil_second(1977, 6, 28, 9, 8, 7), tz);
-  EXPECT_EQ("Tue, 28 Jun 1977 09:08:07 -0700", format(RFC1123_full, tp, tz));
-  EXPECT_EQ("28 Jun 1977 09:08:07 -0700", format(RFC1123_no_wday, tp, tz));
-}
-
-TEST(Format, Week) {
-  const time_zone utc = utc_time_zone();
-
-  auto tp = convert(civil_second(2017, 1, 1, 0, 0, 0), utc);
-  EXPECT_EQ("2017-01-7", format("%Y-%U-%u", tp, utc));
-  EXPECT_EQ("2017-00-0", format("%Y-%W-%w", tp, utc));
-
-  tp = convert(civil_second(2017, 12, 31, 0, 0, 0), utc);
-  EXPECT_EQ("2017-53-7", format("%Y-%U-%u", tp, utc));
-  EXPECT_EQ("2017-52-0", format("%Y-%W-%w", tp, utc));
-
-  tp = convert(civil_second(2018, 1, 1, 0, 0, 0), utc);
-  EXPECT_EQ("2018-00-1", format("%Y-%U-%u", tp, utc));
-  EXPECT_EQ("2018-01-1", format("%Y-%W-%w", tp, utc));
-
-  tp = convert(civil_second(2018, 12, 31, 0, 0, 0), utc);
-  EXPECT_EQ("2018-52-1", format("%Y-%U-%u", tp, utc));
-  EXPECT_EQ("2018-53-1", format("%Y-%W-%w", tp, utc));
-
-  tp = convert(civil_second(2019, 1, 1, 0, 0, 0), utc);
-  EXPECT_EQ("2019-00-2", format("%Y-%U-%u", tp, utc));
-  EXPECT_EQ("2019-00-2", format("%Y-%W-%w", tp, utc));
-
-  tp = convert(civil_second(2019, 12, 31, 0, 0, 0), utc);
-  EXPECT_EQ("2019-52-2", format("%Y-%U-%u", tp, utc));
-  EXPECT_EQ("2019-52-2", format("%Y-%W-%w", tp, utc));
-}
-
-//
-// Testing parse()
-//
-
-TEST(Parse, TimePointResolution) {
-  const char kFmt[] = "%H:%M:%E*S";
-  const time_zone utc = utc_time_zone();
-
-  time_point<chrono::nanoseconds> tp_ns;
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123456789", utc, &tp_ns));
-  EXPECT_EQ("03:04:05.123456789", format(kFmt, tp_ns, utc));
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123456", utc, &tp_ns));
-  EXPECT_EQ("03:04:05.123456", format(kFmt, tp_ns, utc));
-
-  time_point<chrono::microseconds> tp_us;
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123456789", utc, &tp_us));
-  EXPECT_EQ("03:04:05.123456", format(kFmt, tp_us, utc));
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123456", utc, &tp_us));
-  EXPECT_EQ("03:04:05.123456", format(kFmt, tp_us, utc));
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123", utc, &tp_us));
-  EXPECT_EQ("03:04:05.123", format(kFmt, tp_us, utc));
-
-  time_point<chrono::milliseconds> tp_ms;
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123456", utc, &tp_ms));
-  EXPECT_EQ("03:04:05.123", format(kFmt, tp_ms, utc));
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123", utc, &tp_ms));
-  EXPECT_EQ("03:04:05.123", format(kFmt, tp_ms, utc));
-  EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_ms));
-  EXPECT_EQ("03:04:05", format(kFmt, tp_ms, utc));
-
-  time_point<chrono::seconds> tp_s;
-  EXPECT_TRUE(parse(kFmt, "03:04:05.123", utc, &tp_s));
-  EXPECT_EQ("03:04:05", format(kFmt, tp_s, utc));
-  EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_s));
-  EXPECT_EQ("03:04:05", format(kFmt, tp_s, utc));
-
-  time_point<chrono::minutes> tp_m;
-  EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_m));
-  EXPECT_EQ("03:04:00", format(kFmt, tp_m, utc));
-
-  time_point<chrono::hours> tp_h;
-  EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_h));
-  EXPECT_EQ("03:00:00", format(kFmt, tp_h, utc));
-}
-
-TEST(Parse, TimePointExtendedResolution) {
-  const char kFmt[] = "%H:%M:%E*S";
-  const time_zone utc = utc_time_zone();
-
-  time_point<absl::time_internal::cctz::seconds> tp;
-  detail::femtoseconds fs;
-  EXPECT_TRUE(detail::parse(kFmt, "12:34:56.123456789012345", utc, &tp, &fs));
-  EXPECT_EQ("12:34:56.123456789012345", detail::format(kFmt, tp, fs, utc));
-  EXPECT_TRUE(detail::parse(kFmt, "12:34:56.012345678901234", utc, &tp, &fs));
-  EXPECT_EQ("12:34:56.012345678901234", detail::format(kFmt, tp, fs, utc));
-  EXPECT_TRUE(detail::parse(kFmt, "12:34:56.001234567890123", utc, &tp, &fs));
-  EXPECT_EQ("12:34:56.001234567890123", detail::format(kFmt, tp, fs, utc));
-  EXPECT_TRUE(detail::parse(kFmt, "12:34:56.000000000000123", utc, &tp, &fs));
-  EXPECT_EQ("12:34:56.000000000000123", detail::format(kFmt, tp, fs, utc));
-  EXPECT_TRUE(detail::parse(kFmt, "12:34:56.000000000000012", utc, &tp, &fs));
-  EXPECT_EQ("12:34:56.000000000000012", detail::format(kFmt, tp, fs, utc));
-  EXPECT_TRUE(detail::parse(kFmt, "12:34:56.000000000000001", utc, &tp, &fs));
-  EXPECT_EQ("12:34:56.000000000000001", detail::format(kFmt, tp, fs, utc));
-}
-
-TEST(Parse, Basics) {
-  time_zone tz = utc_time_zone();
-  time_point<chrono::nanoseconds> tp =
-      chrono::system_clock::from_time_t(1234567890);
-
-  // Simple edge cases.
-  EXPECT_TRUE(parse("", "", tz, &tp));
-  EXPECT_EQ(chrono::system_clock::from_time_t(0), tp);  // everything defaulted
-  EXPECT_TRUE(parse(" ", " ", tz, &tp));
-  EXPECT_TRUE(parse("  ", "  ", tz, &tp));
-  EXPECT_TRUE(parse("x", "x", tz, &tp));
-  EXPECT_TRUE(parse("xxx", "xxx", tz, &tp));
-
-  EXPECT_TRUE(
-      parse("%Y-%m-%d %H:%M:%S %z", "2013-06-28 19:08:09 -0800", tz, &tp));
-  ExpectTime(tp, tz, 2013, 6, 29, 3, 8, 9, 0, false, "UTC");
-}
-
-TEST(Parse, WithTimeZone) {
-  time_zone tz;
-  EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz));
-  time_point<chrono::nanoseconds> tp;
-
-  // We can parse a string without a UTC offset if we supply a timezone.
-  EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S", "2013-06-28 19:08:09", tz, &tp));
-  ExpectTime(tp, tz, 2013, 6, 28, 19, 8, 9, -7 * 60 * 60, true, "PDT");
-
-  // But the timezone is ignored when a UTC offset is present.
-  EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S %z", "2013-06-28 19:08:09 +0800",
-                    utc_time_zone(), &tp));
-  ExpectTime(tp, tz, 2013, 6, 28, 19 - 8 - 7, 8, 9, -7 * 60 * 60, true, "PDT");
-
-  // Check a skipped time (a Spring DST transition). parse() uses the
-  // pre-transition offset.
-  EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S", "2011-03-13 02:15:00", tz, &tp));
-  ExpectTime(tp, tz, 2011, 3, 13, 3, 15, 0, -7 * 60 * 60, true, "PDT");
-
-  // Check a repeated time (a Fall DST transition).  parse() uses the
-  // pre-transition offset.
-  EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S", "2011-11-06 01:15:00", tz, &tp));
-  ExpectTime(tp, tz, 2011, 11, 6, 1, 15, 0, -7 * 60 * 60, true, "PDT");
-}
-
-TEST(Parse, LeapSecond) {
-  time_zone tz;
-  EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz));
-  time_point<chrono::nanoseconds> tp;
-
-  // ":59" -> ":59"
-  EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:59-08:00", tz, &tp));
-  ExpectTime(tp, tz, 2013, 6, 28, 8, 8, 59, -7 * 60 * 60, true, "PDT");
-
-  // ":59.5" -> ":59.5"
-  EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:59.5-08:00", tz, &tp));
-  ExpectTime(tp, tz, 2013, 6, 28, 8, 8, 59, -7 * 60 * 60, true, "PDT");
-
-  // ":60" -> ":00"
-  EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:60-08:00", tz, &tp));
-  ExpectTime(tp, tz, 2013, 6, 28, 8, 9, 0, -7 * 60 * 60, true, "PDT");
-
-  // ":60.5" -> ":00.0"
-  EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:60.5-08:00", tz, &tp));
-  ExpectTime(tp, tz, 2013, 6, 28, 8, 9, 0, -7 * 60 * 60, true, "PDT");
-
-  // ":61" -> error
-  EXPECT_FALSE(parse(RFC3339_full, "2013-06-28T07:08:61-08:00", tz, &tp));
-}
-
-TEST(Parse, ErrorCases) {
-  const time_zone tz = utc_time_zone();
-  auto tp = chrono::system_clock::from_time_t(0);
-
-  // Illegal trailing data.
-  EXPECT_FALSE(parse("%S", "123", tz, &tp));
-
-  // Can't parse an illegal format specifier.
-  EXPECT_FALSE(parse("%Q", "x", tz, &tp));
-
-  // Fails because of trailing, unparsed data "blah".
-  EXPECT_FALSE(parse("%m-%d", "2-3 blah", tz, &tp));
-
-  // Trailing whitespace is allowed.
-  EXPECT_TRUE(parse("%m-%d", "2-3  ", tz, &tp));
-  EXPECT_EQ(2, convert(tp, utc_time_zone()).month());
-  EXPECT_EQ(3, convert(tp, utc_time_zone()).day());
-
-  // Feb 31 requires normalization.
-  EXPECT_FALSE(parse("%m-%d", "2-31", tz, &tp));
-
-  // Check that we cannot have spaces in UTC offsets.
-  EXPECT_TRUE(parse("%z", "-0203", tz, &tp));
-  EXPECT_FALSE(parse("%z", "- 2 3", tz, &tp));
-  EXPECT_TRUE(parse("%Ez", "-02:03", tz, &tp));
-  EXPECT_FALSE(parse("%Ez", "- 2: 3", tz, &tp));
-
-  // Check that we reject other malformed UTC offsets.
-  EXPECT_FALSE(parse("%Ez", "+-08:00", tz, &tp));
-  EXPECT_FALSE(parse("%Ez", "-+08:00", tz, &tp));
-
-  // Check that we do not accept "-0" in fields that allow zero.
-  EXPECT_FALSE(parse("%Y", "-0", tz, &tp));
-  EXPECT_FALSE(parse("%E4Y", "-0", tz, &tp));
-  EXPECT_FALSE(parse("%H", "-0", tz, &tp));
-  EXPECT_FALSE(parse("%M", "-0", tz, &tp));
-  EXPECT_FALSE(parse("%S", "-0", tz, &tp));
-  EXPECT_FALSE(parse("%z", "+-000", tz, &tp));
-  EXPECT_FALSE(parse("%Ez", "+-0:00", tz, &tp));
-  EXPECT_FALSE(parse("%z", "-00-0", tz, &tp));
-  EXPECT_FALSE(parse("%Ez", "-00:-0", tz, &tp));
-}
-
-TEST(Parse, PosixConversions) {
-  time_zone tz = utc_time_zone();
-  auto tp = chrono::system_clock::from_time_t(0);
-  const auto reset = convert(civil_second(1977, 6, 28, 9, 8, 7), tz);
-
-  tp = reset;
-  EXPECT_TRUE(parse("%d", "15", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).day());
-
-  // %e is an extension, but is supported internally.
-  tp = reset;
-  EXPECT_TRUE(parse("%e", "15", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).day());  // Equivalent to %d
-
-  tp = reset;
-  EXPECT_TRUE(parse("%H", "17", tz, &tp));
-  EXPECT_EQ(17, convert(tp, tz).hour());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%I", "5", tz, &tp));
-  EXPECT_EQ(5, convert(tp, tz).hour());
-
-  // %j is parsed but ignored.
-  EXPECT_TRUE(parse("%j", "32", tz, &tp));
-
-  tp = reset;
-  EXPECT_TRUE(parse("%m", "11", tz, &tp));
-  EXPECT_EQ(11, convert(tp, tz).month());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%M", "33", tz, &tp));
-  EXPECT_EQ(33, convert(tp, tz).minute());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%S", "55", tz, &tp));
-  EXPECT_EQ(55, convert(tp, tz).second());
-
-  // %U is parsed but ignored.
-  EXPECT_TRUE(parse("%U", "15", tz, &tp));
-
-  // %w is parsed but ignored.
-  EXPECT_TRUE(parse("%w", "2", tz, &tp));
-
-  // %W is parsed but ignored.
-  EXPECT_TRUE(parse("%W", "22", tz, &tp));
-
-  tp = reset;
-  EXPECT_TRUE(parse("%y", "04", tz, &tp));
-  EXPECT_EQ(2004, convert(tp, tz).year());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Y", "2004", tz, &tp));
-  EXPECT_EQ(2004, convert(tp, tz).year());
-
-  EXPECT_TRUE(parse("%%", "%", tz, &tp));
-
-#if defined(__linux__)
-  // SU/C99/TZ extensions
-
-  // Because we handle each (non-internal) specifier in a separate call
-  // to strptime(), there is no way to group %C and %y together.  So we
-  // just skip the %C/%y case.
-#if 0
-  tp = reset;
-  EXPECT_TRUE(parse("%C %y", "20 04", tz, &tp));
-  EXPECT_EQ(2004, convert(tp, tz).year());
-#endif
-
-  tp = reset;
-  EXPECT_TRUE(parse("%D", "02/03/04", tz, &tp));
-  EXPECT_EQ(2, convert(tp, tz).month());
-  EXPECT_EQ(3, convert(tp, tz).day());
-  EXPECT_EQ(2004, convert(tp, tz).year());
-
-  EXPECT_TRUE(parse("%n", "\n", tz, &tp));
-
-  tp = reset;
-  EXPECT_TRUE(parse("%R", "03:44", tz, &tp));
-  EXPECT_EQ(3, convert(tp, tz).hour());
-  EXPECT_EQ(44, convert(tp, tz).minute());
-
-  EXPECT_TRUE(parse("%t", "\t\v\f\n\r ", tz, &tp));
-
-  tp = reset;
-  EXPECT_TRUE(parse("%T", "03:44:55", tz, &tp));
-  EXPECT_EQ(3, convert(tp, tz).hour());
-  EXPECT_EQ(44, convert(tp, tz).minute());
-  EXPECT_EQ(55, convert(tp, tz).second());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%s", "1234567890", tz, &tp));
-  EXPECT_EQ(chrono::system_clock::from_time_t(1234567890), tp);
-
-  // %s conversion, like %z/%Ez, pays no heed to the optional zone.
-  time_zone lax;
-  EXPECT_TRUE(load_time_zone("America/Los_Angeles", &lax));
-  tp = reset;
-  EXPECT_TRUE(parse("%s", "1234567890", lax, &tp));
-  EXPECT_EQ(chrono::system_clock::from_time_t(1234567890), tp);
-
-  // This is most important when the time has the same YMDhms
-  // breakdown in the zone as some other time.  For example, ...
-  //  1414917000 in US/Pacific -> Sun Nov 2 01:30:00 2014 (PDT)
-  //  1414920600 in US/Pacific -> Sun Nov 2 01:30:00 2014 (PST)
-  tp = reset;
-  EXPECT_TRUE(parse("%s", "1414917000", lax, &tp));
-  EXPECT_EQ(chrono::system_clock::from_time_t(1414917000), tp);
-  tp = reset;
-  EXPECT_TRUE(parse("%s", "1414920600", lax, &tp));
-  EXPECT_EQ(chrono::system_clock::from_time_t(1414920600), tp);
-#endif
-}
-
-TEST(Parse, LocaleSpecific) {
-  time_zone tz = utc_time_zone();
-  auto tp = chrono::system_clock::from_time_t(0);
-  const auto reset = convert(civil_second(1977, 6, 28, 9, 8, 7), tz);
-
-  // %a is parsed but ignored.
-  EXPECT_TRUE(parse("%a", "Mon", tz, &tp));
-
-  // %A is parsed but ignored.
-  EXPECT_TRUE(parse("%A", "Monday", tz, &tp));
-
-  tp = reset;
-  EXPECT_TRUE(parse("%b", "Feb", tz, &tp));
-  EXPECT_EQ(2, convert(tp, tz).month());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%B", "February", tz, &tp));
-  EXPECT_EQ(2, convert(tp, tz).month());
-
-  // %p is parsed but ignored if it's alone.  But it's used with %I.
-  EXPECT_TRUE(parse("%p", "AM", tz, &tp));
-  tp = reset;
-  EXPECT_TRUE(parse("%I %p", "5 PM", tz, &tp));
-  EXPECT_EQ(17, convert(tp, tz).hour());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%x", "02/03/04", tz, &tp));
-  if (convert(tp, tz).month() == 2) {
-    EXPECT_EQ(3, convert(tp, tz).day());
-  } else {
-    EXPECT_EQ(2, convert(tp, tz).day());
-    EXPECT_EQ(3, convert(tp, tz).month());
-  }
-  EXPECT_EQ(2004, convert(tp, tz).year());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%X", "15:44:55", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).hour());
-  EXPECT_EQ(44, convert(tp, tz).minute());
-  EXPECT_EQ(55, convert(tp, tz).second());
-
-#if defined(__linux__)
-  // SU/C99/TZ extensions
-
-  tp = reset;
-  EXPECT_TRUE(parse("%h", "Feb", tz, &tp));
-  EXPECT_EQ(2, convert(tp, tz).month());  // Equivalent to %b
-
-  tp = reset;
-  EXPECT_TRUE(parse("%l %p", "5 PM", tz, &tp));
-  EXPECT_EQ(17, convert(tp, tz).hour());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%r", "03:44:55 PM", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).hour());
-  EXPECT_EQ(44, convert(tp, tz).minute());
-  EXPECT_EQ(55, convert(tp, tz).second());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Ec", "Tue Nov 19 05:06:07 2013", tz, &tp));
-  EXPECT_EQ(convert(civil_second(2013, 11, 19, 5, 6, 7), tz), tp);
-
-  // Modified conversion specifiers %E_
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Ex", "02/03/04", tz, &tp));
-  EXPECT_EQ(2, convert(tp, tz).month());
-  EXPECT_EQ(3, convert(tp, tz).day());
-  EXPECT_EQ(2004, convert(tp, tz).year());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%EX", "15:44:55", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).hour());
-  EXPECT_EQ(44, convert(tp, tz).minute());
-  EXPECT_EQ(55, convert(tp, tz).second());
-
-  // %Ey, the year offset from %EC, doesn't really make sense alone as there
-  // is no way to represent it in tm_year (%EC is not simply the century).
-  // Yet, because we handle each (non-internal) specifier in a separate call
-  // to strptime(), there is no way to group %EC and %Ey either.  So we just
-  // skip the %EC and %Ey cases.
-
-  tp = reset;
-  EXPECT_TRUE(parse("%EY", "2004", tz, &tp));
-  EXPECT_EQ(2004, convert(tp, tz).year());
-
-  // Modified conversion specifiers %O_
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Od", "15", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).day());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Oe", "15", tz, &tp));
-  EXPECT_EQ(15, convert(tp, tz).day());  // Equivalent to %d
-
-  tp = reset;
-  EXPECT_TRUE(parse("%OH", "17", tz, &tp));
-  EXPECT_EQ(17, convert(tp, tz).hour());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%OI", "5", tz, &tp));
-  EXPECT_EQ(5, convert(tp, tz).hour());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Om", "11", tz, &tp));
-  EXPECT_EQ(11, convert(tp, tz).month());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%OM", "33", tz, &tp));
-  EXPECT_EQ(33, convert(tp, tz).minute());
-
-  tp = reset;
-  EXPECT_TRUE(parse("%OS", "55", tz, &tp));
-  EXPECT_EQ(55, convert(tp, tz).second());
-
-  // %OU is parsed but ignored.
-  EXPECT_TRUE(parse("%OU", "15", tz, &tp));
-
-  // %Ow is parsed but ignored.
-  EXPECT_TRUE(parse("%Ow", "2", tz, &tp));
-
-  // %OW is parsed but ignored.
-  EXPECT_TRUE(parse("%OW", "22", tz, &tp));
-
-  tp = reset;
-  EXPECT_TRUE(parse("%Oy", "04", tz, &tp));
-  EXPECT_EQ(2004, convert(tp, tz).year());
-#endif
-}
-
-TEST(Parse, ExtendedSeconds) {
-  const time_zone tz = utc_time_zone();
-  const time_point<chrono::nanoseconds> unix_epoch =
-      chrono::system_clock::from_time_t(0);
-
-  // All %E<prec>S cases are treated the same as %E*S on input.
-  auto precisions = {"*", "0", "1",  "2",  "3",  "4",  "5",  "6", "7",
-                     "8", "9", "10", "11", "12", "13", "14", "15"};
-  for (const std::string& prec : precisions) {
-    const std::string fmt = "%E" + prec + "S";
-    SCOPED_TRACE(fmt);
-    time_point<chrono::nanoseconds> tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "5", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.0", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.00", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.6", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5) + chrono::milliseconds(600), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.60", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5) + chrono::milliseconds(600), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.600", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5) + chrono::milliseconds(600), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.67", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5) + chrono::milliseconds(670), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.670", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5) + chrono::milliseconds(670), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "05.678", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::seconds(5) + chrono::milliseconds(678), tp);
-  }
-
-  // Here is a "%E*S" case we got wrong for a while.  The fractional
-  // part of the first instant is less than 2^31 and was correctly
-  // parsed, while the second (and any subsecond field >=2^31) failed.
-  time_point<chrono::nanoseconds> tp = unix_epoch;
-  EXPECT_TRUE(parse("%E*S", "0.2147483647", tz, &tp));
-  EXPECT_EQ(unix_epoch + chrono::nanoseconds(214748364), tp);
-  tp = unix_epoch;
-  EXPECT_TRUE(parse("%E*S", "0.2147483648", tz, &tp));
-  EXPECT_EQ(unix_epoch + chrono::nanoseconds(214748364), tp);
-
-  // We should also be able to specify long strings of digits far
-  // beyond the current resolution and have them convert the same way.
-  tp = unix_epoch;
-  EXPECT_TRUE(parse(
-      "%E*S", "0.214748364801234567890123456789012345678901234567890123456789",
-      tz, &tp));
-  EXPECT_EQ(unix_epoch + chrono::nanoseconds(214748364), tp);
-}
-
-TEST(Parse, ExtendedSecondsScan) {
-  const time_zone tz = utc_time_zone();
-  time_point<chrono::nanoseconds> tp;
-  for (int ms = 0; ms < 1000; ms += 111) {
-    for (int us = 0; us < 1000; us += 27) {
-      const int micros = ms * 1000 + us;
-      for (int ns = 0; ns < 1000; ns += 9) {
-        const auto expected = chrono::system_clock::from_time_t(0) +
-                              chrono::nanoseconds(micros * 1000 + ns);
-        std::ostringstream oss;
-        oss << "0." << std::setfill('0') << std::setw(3);
-        oss << ms << std::setw(3) << us << std::setw(3) << ns;
-        const std::string input = oss.str();
-        EXPECT_TRUE(parse("%E*S", input, tz, &tp));
-        EXPECT_EQ(expected, tp) << input;
-      }
-    }
-  }
-}
-
-TEST(Parse, ExtendedSubeconds) {
-  const time_zone tz = utc_time_zone();
-  const time_point<chrono::nanoseconds> unix_epoch =
-      chrono::system_clock::from_time_t(0);
-
-  // All %E<prec>f cases are treated the same as %E*f on input.
-  auto precisions = {"*", "0", "1",  "2",  "3",  "4",  "5",  "6", "7",
-                     "8", "9", "10", "11", "12", "13", "14", "15"};
-  for (const std::string& prec : precisions) {
-    const std::string fmt = "%E" + prec + "f";
-    SCOPED_TRACE(fmt);
-    time_point<chrono::nanoseconds> tp = unix_epoch - chrono::seconds(1);
-    EXPECT_TRUE(parse(fmt, "", tz, &tp));
-    EXPECT_EQ(unix_epoch, tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "6", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::milliseconds(600), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "60", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::milliseconds(600), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "600", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::milliseconds(600), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "67", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::milliseconds(670), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "670", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::milliseconds(670), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "678", tz, &tp));
-    EXPECT_EQ(unix_epoch + chrono::milliseconds(678), tp);
-    tp = unix_epoch;
-    EXPECT_TRUE(parse(fmt, "6789", tz, &tp));
-    EXPECT_EQ(
-        unix_epoch + chrono::milliseconds(678) + chrono::microseconds(900), tp);
-  }
-
-  // Here is a "%E*f" case we got wrong for a while.  The fractional
-  // part of the first instant is less than 2^31 and was correctly
-  // parsed, while the second (and any subsecond field >=2^31) failed.
-  time_point<chrono::nanoseconds> tp = unix_epoch;
-  EXPECT_TRUE(parse("%E*f", "2147483647", tz, &tp));
-  EXPECT_EQ(unix_epoch + chrono::nanoseconds(214748364), tp);
-  tp = unix_epoch;
-  EXPECT_TRUE(parse("%E*f", "2147483648", tz, &tp));
-  EXPECT_EQ(unix_epoch + chrono::nanoseconds(214748364), tp);
-
-  // We should also be able to specify long strings of digits far
-  // beyond the current resolution and have them convert the same way.
-  tp = unix_epoch;
-  EXPECT_TRUE(parse(
-      "%E*f", "214748364801234567890123456789012345678901234567890123456789",
-      tz, &tp));
-  EXPECT_EQ(unix_epoch + chrono::nanoseconds(214748364), tp);
-}
-
-TEST(Parse, ExtendedSubecondsScan) {
-  time_point<chrono::nanoseconds> tp;
-  const time_zone tz = utc_time_zone();
-  for (int ms = 0; ms < 1000; ms += 111) {
-    for (int us = 0; us < 1000; us += 27) {
-      const int micros = ms * 1000 + us;
-      for (int ns = 0; ns < 1000; ns += 9) {
-        std::ostringstream oss;
-        oss << std::setfill('0') << std::setw(3) << ms;
-        oss << std::setw(3) << us << std::setw(3) << ns;
-        const std::string nanos = oss.str();
-        const auto expected = chrono::system_clock::from_time_t(0) +
-                              chrono::nanoseconds(micros * 1000 + ns);
-        for (int ps = 0; ps < 1000; ps += 250) {
-          std::ostringstream ps_oss;
-          oss << std::setfill('0') << std::setw(3) << ps;
-          const std::string input = nanos + ps_oss.str() + "999";
-          EXPECT_TRUE(parse("%E*f", input, tz, &tp));
-          EXPECT_EQ(expected + chrono::nanoseconds(ps) / 1000, tp) << input;
-        }
-      }
-    }
-  }
-}
-
-TEST(Parse, ExtendedOffset) {
-  const time_zone utc = utc_time_zone();
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  EXPECT_TRUE(parse("%Ez", "+00:00", utc, &tp));
-  EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse("%Ez", "-12:34", utc, &tp));
-  EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp);
-  EXPECT_TRUE(parse("%Ez", "+12:34", utc, &tp));
-  EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp);
-  EXPECT_FALSE(parse("%Ez", "-12:3", utc, &tp));
-
-  for (auto fmt : {"%Ez", "%z"}) {
-    EXPECT_TRUE(parse(fmt, "+0000", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-1234", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+1234", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-123", utc, &tp));
-
-    EXPECT_TRUE(parse(fmt, "+00", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-12", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+12", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 12, 0, 0), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-1", utc, &tp));
-  }
-}
-
-TEST(Parse, ExtendedSecondOffset) {
-  const time_zone utc = utc_time_zone();
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  for (auto fmt : {"%Ez", "%E*z", "%:z", "%::z", "%:::z"}) {
-    EXPECT_TRUE(parse(fmt, "+00:00:00", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-12:34:56", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 56), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+12:34:56", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 25, 4), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-12:34:5", utc, &tp));
-
-    EXPECT_TRUE(parse(fmt, "+000000", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-123456", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 56), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+123456", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 25, 4), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-12345", utc, &tp));
-
-    EXPECT_TRUE(parse(fmt, "+00:00", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-12:34", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+12:34", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-12:3", utc, &tp));
-
-    EXPECT_TRUE(parse(fmt, "+0000", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-1234", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+1234", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-123", utc, &tp));
-
-    EXPECT_TRUE(parse(fmt, "+00", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "-12", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 0, 0), utc), tp);
-    EXPECT_TRUE(parse(fmt, "+12", utc, &tp));
-    EXPECT_EQ(convert(civil_second(1969, 12, 31, 12, 0, 0), utc), tp);
-    EXPECT_FALSE(parse(fmt, "-1", utc, &tp));
-  }
-}
-
-TEST(Parse, ExtendedYears) {
-  const time_zone utc = utc_time_zone();
-  const char e4y_fmt[] = "%E4Y%m%d";  // no separators
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  // %E4Y consumes exactly four chars, including any sign.
-  EXPECT_TRUE(parse(e4y_fmt, "-9991127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(-999, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "-0991127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(-99, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "-0091127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(-9, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "-0011127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(-1, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "00001127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(0, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "00011127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(1, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "00091127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(9, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "00991127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(99, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "09991127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(999, 11, 27, 0, 0, 0), utc), tp);
-  EXPECT_TRUE(parse(e4y_fmt, "99991127", utc, &tp));
-  EXPECT_EQ(convert(civil_second(9999, 11, 27, 0, 0, 0), utc), tp);
-
-  // When the year is outside [-999:9999], the parse fails.
-  EXPECT_FALSE(parse(e4y_fmt, "-10001127", utc, &tp));
-  EXPECT_FALSE(parse(e4y_fmt, "100001127", utc, &tp));
-}
-
-TEST(Parse, RFC3339Format) {
-  const time_zone tz = utc_time_zone();
-  time_point<chrono::nanoseconds> tp;
-  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00+00:00", tz, &tp));
-  ExpectTime(tp, tz, 2014, 2, 12, 20, 21, 0, 0, false, "UTC");
-
-  // Check that %ET also accepts "t".
-  time_point<chrono::nanoseconds> tp2;
-  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12t20:21:00+00:00", tz, &tp2));
-  EXPECT_EQ(tp, tp2);
-
-  // Check that %Ez also accepts "Z" as a synonym for "+00:00".
-  time_point<chrono::nanoseconds> tp3;
-  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00Z", tz, &tp3));
-  EXPECT_EQ(tp, tp3);
-
-  // Check that %Ez also accepts "z" as a synonym for "+00:00".
-  time_point<chrono::nanoseconds> tp4;
-  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00z", tz, &tp4));
-  EXPECT_EQ(tp, tp4);
-}
-
-TEST(Parse, Week) {
-  const time_zone utc = utc_time_zone();
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  auto exp = convert(civil_second(2017, 1, 1, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2017-01-7", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2017-00-0", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  exp = convert(civil_second(2017, 12, 31, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2017-53-7", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2017-52-0", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  exp = convert(civil_second(2018, 1, 1, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2018-00-1", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2018-01-1", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  exp = convert(civil_second(2018, 12, 31, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2018-52-1", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2018-53-1", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  exp = convert(civil_second(2019, 1, 1, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2019-00-2", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2019-00-2", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  exp = convert(civil_second(2019, 12, 31, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2019-52-2", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2019-52-2", utc, &tp));
-  EXPECT_EQ(exp, tp);
-}
-
-TEST(Parse, WeekYearShift) {
-  // %U/%W conversions with week values in {0, 52, 53} can slip
-  // into the previous/following calendar years.
-  const time_zone utc = utc_time_zone();
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  auto exp = convert(civil_second(2019, 12, 31, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2020-00-2", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2020-00-2", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  exp = convert(civil_second(2021, 1, 1, 0, 0, 0), utc);
-  EXPECT_TRUE(parse("%Y-%U-%u", "2020-52-5", utc, &tp));
-  EXPECT_EQ(exp, tp);
-  EXPECT_TRUE(parse("%Y-%W-%w", "2020-52-5", utc, &tp));
-  EXPECT_EQ(exp, tp);
-
-  // Slipping into the previous/following calendar years should fail when
-  // we're already at the extremes.
-  EXPECT_FALSE(parse("%Y-%U-%u", "-9223372036854775808-0-7", utc, &tp));
-  EXPECT_FALSE(parse("%Y-%U-%u", "9223372036854775807-53-7", utc, &tp));
-}
-
-TEST(Parse, MaxRange) {
-  const time_zone utc = utc_time_zone();
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  // tests the upper limit using +00:00 offset
-  EXPECT_TRUE(
-      parse(RFC3339_sec, "292277026596-12-04T15:30:07+00:00", utc, &tp));
-  EXPECT_EQ(tp, time_point<absl::time_internal::cctz::seconds>::max());
-  EXPECT_FALSE(
-      parse(RFC3339_sec, "292277026596-12-04T15:30:08+00:00", utc, &tp));
-
-  // tests the upper limit using -01:00 offset
-  EXPECT_TRUE(
-      parse(RFC3339_sec, "292277026596-12-04T14:30:07-01:00", utc, &tp));
-  EXPECT_EQ(tp, time_point<absl::time_internal::cctz::seconds>::max());
-  EXPECT_FALSE(
-      parse(RFC3339_sec, "292277026596-12-04T15:30:07-01:00", utc, &tp));
-
-  // tests the lower limit using +00:00 offset
-  EXPECT_TRUE(
-      parse(RFC3339_sec, "-292277022657-01-27T08:29:52+00:00", utc, &tp));
-  EXPECT_EQ(tp, time_point<absl::time_internal::cctz::seconds>::min());
-  EXPECT_FALSE(
-      parse(RFC3339_sec, "-292277022657-01-27T08:29:51+00:00", utc, &tp));
-
-  // tests the lower limit using +01:00 offset
-  EXPECT_TRUE(
-      parse(RFC3339_sec, "-292277022657-01-27T09:29:52+01:00", utc, &tp));
-  EXPECT_EQ(tp, time_point<absl::time_internal::cctz::seconds>::min());
-  EXPECT_FALSE(
-      parse(RFC3339_sec, "-292277022657-01-27T08:29:51+01:00", utc, &tp));
-
-  // tests max/min civil-second overflow
-  EXPECT_FALSE(
-      parse(RFC3339_sec, "9223372036854775807-12-31T23:59:59-00:01", utc, &tp));
-  EXPECT_FALSE(parse(RFC3339_sec, "-9223372036854775808-01-01T00:00:00+00:01",
-                     utc, &tp));
-
-  // TODO: Add tests that parsing times with fractional seconds overflow
-  // appropriately. This can't be done until cctz::parse() properly detects
-  // overflow when combining the chrono seconds and femto.
-}
-
-//
-// Roundtrip test for format()/parse().
-//
-
-TEST(FormatParse, RoundTrip) {
-  time_zone lax;
-  EXPECT_TRUE(load_time_zone("America/Los_Angeles", &lax));
-  const auto in = convert(civil_second(1977, 6, 28, 9, 8, 7), lax);
-  const auto subseconds = chrono::nanoseconds(654321);
-
-  // RFC3339, which renders subseconds.
-  {
-    time_point<chrono::nanoseconds> out;
-    const std::string s = format(RFC3339_full, in + subseconds, lax);
-    EXPECT_TRUE(parse(RFC3339_full, s, lax, &out)) << s;
-    EXPECT_EQ(in + subseconds, out);  // RFC3339_full includes %Ez
-  }
-
-  // RFC1123, which only does whole seconds.
-  {
-    time_point<chrono::nanoseconds> out;
-    const std::string s = format(RFC1123_full, in, lax);
-    EXPECT_TRUE(parse(RFC1123_full, s, lax, &out)) << s;
-    EXPECT_EQ(in, out);  // RFC1123_full includes %z
-  }
-
-#if defined(_WIN32) || defined(_WIN64)
-  // Initial investigations indicate the %c does not roundtrip on Windows.
-  // TODO: Figure out what is going on here (perhaps a locale problem).
-#elif defined(__EMSCRIPTEN__)
-  // strftime() and strptime() use different defintions for "%c" under
-  // emscripten (see https://github.com/kripken/emscripten/pull/7491),
-  // causing its round-trip test to fail.
-#else
-  // Even though we don't know what %c will produce, it should roundtrip,
-  // but only in the 0-offset timezone.
-  {
-    time_point<chrono::nanoseconds> out;
-    time_zone utc = utc_time_zone();
-    const std::string s = format("%c", in, utc);
-    EXPECT_TRUE(parse("%c", s, utc, &out)) << s;
-    EXPECT_EQ(in, out);
-  }
-#endif
-}
-
-TEST(FormatParse, RoundTripDistantFuture) {
-  const time_zone utc = utc_time_zone();
-  const time_point<absl::time_internal::cctz::seconds> in =
-      time_point<absl::time_internal::cctz::seconds>::max();
-  const std::string s = format(RFC3339_full, in, utc);
-  time_point<absl::time_internal::cctz::seconds> out;
-  EXPECT_TRUE(parse(RFC3339_full, s, utc, &out)) << s;
-  EXPECT_EQ(in, out);
-}
-
-TEST(FormatParse, RoundTripDistantPast) {
-  const time_zone utc = utc_time_zone();
-  const time_point<absl::time_internal::cctz::seconds> in =
-      time_point<absl::time_internal::cctz::seconds>::min();
-  const std::string s = format(RFC3339_full, in, utc);
-  time_point<absl::time_internal::cctz::seconds> out;
-  EXPECT_TRUE(parse(RFC3339_full, s, utc, &out)) << s;
-  EXPECT_EQ(in, out);
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.cc
deleted file mode 100644
index 0319b2f98e67..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.cc
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "time_zone_if.h"
-
-#include "absl/base/config.h"
-#include "time_zone_info.h"
-#include "time_zone_libc.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-std::unique_ptr<TimeZoneIf> TimeZoneIf::Load(const std::string& name) {
-  // Support "libc:localtime" and "libc:*" to access the legacy
-  // localtime and UTC support respectively from the C library.
-  if (name.compare(0, 5, "libc:") == 0) {
-    return std::unique_ptr<TimeZoneIf>(new TimeZoneLibC(name.substr(5)));
-  }
-
-  // Otherwise use the "zoneinfo" implementation by default.
-  std::unique_ptr<TimeZoneInfo> tz(new TimeZoneInfo);
-  if (!tz->Load(name)) tz.reset();
-  return std::unique_ptr<TimeZoneIf>(tz.release());
-}
-
-// Defined out-of-line to avoid emitting a weak vtable in all TUs.
-TimeZoneIf::~TimeZoneIf() {}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.h
deleted file mode 100644
index 32c0891c1e77..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_if.h
+++ /dev/null
@@ -1,76 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_
-
-#include <chrono>
-#include <cstdint>
-#include <memory>
-#include <string>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// A simple interface used to hide time-zone complexities from time_zone::Impl.
-// Subclasses implement the functions for civil-time conversions in the zone.
-class TimeZoneIf {
- public:
-  // A factory function for TimeZoneIf implementations.
-  static std::unique_ptr<TimeZoneIf> Load(const std::string& name);
-
-  virtual ~TimeZoneIf();
-
-  virtual time_zone::absolute_lookup BreakTime(
-      const time_point<seconds>& tp) const = 0;
-  virtual time_zone::civil_lookup MakeTime(const civil_second& cs) const = 0;
-
-  virtual bool NextTransition(const time_point<seconds>& tp,
-                              time_zone::civil_transition* trans) const = 0;
-  virtual bool PrevTransition(const time_point<seconds>& tp,
-                              time_zone::civil_transition* trans) const = 0;
-
-  virtual std::string Version() const = 0;
-  virtual std::string Description() const = 0;
-
- protected:
-  TimeZoneIf() {}
-};
-
-// Convert between time_point<seconds> and a count of seconds since the
-// Unix epoch.  We assume that the std::chrono::system_clock and the
-// Unix clock are second aligned, but not that they share an epoch.
-inline std::int_fast64_t ToUnixSeconds(const time_point<seconds>& tp) {
-  return (tp - std::chrono::time_point_cast<seconds>(
-                   std::chrono::system_clock::from_time_t(0)))
-      .count();
-}
-inline time_point<seconds> FromUnixSeconds(std::int_fast64_t t) {
-  return std::chrono::time_point_cast<seconds>(
-             std::chrono::system_clock::from_time_t(0)) +
-         seconds(t);
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.cc
deleted file mode 100644
index f34e3aec84d6..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "time_zone_impl.h"
-
-#include <deque>
-#include <memory>
-#include <mutex>
-#include <string>
-#include <unordered_map>
-#include <utility>
-
-#include "absl/base/config.h"
-#include "time_zone_fixed.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-// time_zone::Impls are linked into a map to support fast lookup by name.
-using TimeZoneImplByName =
-    std::unordered_map<std::string, const time_zone::Impl*>;
-TimeZoneImplByName* time_zone_map = nullptr;
-
-// Mutual exclusion for time_zone_map.
-std::mutex& TimeZoneMutex() {
-  // This mutex is intentionally "leaked" to avoid the static deinitialization
-  // order fiasco (std::mutex's destructor is not trivial on many platforms).
-  static std::mutex* time_zone_mutex = new std::mutex;
-  return *time_zone_mutex;
-}
-
-}  // namespace
-
-time_zone time_zone::Impl::UTC() { return time_zone(UTCImpl()); }
-
-bool time_zone::Impl::LoadTimeZone(const std::string& name, time_zone* tz) {
-  const Impl* const utc_impl = UTCImpl();
-
-  // Check for UTC (which is never a key in time_zone_map).
-  auto offset = seconds::zero();
-  if (FixedOffsetFromName(name, &offset) && offset == seconds::zero()) {
-    *tz = time_zone(utc_impl);
-    return true;
-  }
-
-  // Check whether the time zone has already been loaded.
-  {
-    std::lock_guard<std::mutex> lock(TimeZoneMutex());
-    if (time_zone_map != nullptr) {
-      TimeZoneImplByName::const_iterator itr = time_zone_map->find(name);
-      if (itr != time_zone_map->end()) {
-        *tz = time_zone(itr->second);
-        return itr->second != utc_impl;
-      }
-    }
-  }
-
-  // Load the new time zone (outside the lock).
-  std::unique_ptr<const Impl> new_impl(new Impl(name));
-
-  // Add the new time zone to the map.
-  std::lock_guard<std::mutex> lock(TimeZoneMutex());
-  if (time_zone_map == nullptr) time_zone_map = new TimeZoneImplByName;
-  const Impl*& impl = (*time_zone_map)[name];
-  if (impl == nullptr) {  // this thread won any load race
-    impl = new_impl->zone_ ? new_impl.release() : utc_impl;
-  }
-  *tz = time_zone(impl);
-  return impl != utc_impl;
-}
-
-void time_zone::Impl::ClearTimeZoneMapTestOnly() {
-  std::lock_guard<std::mutex> lock(TimeZoneMutex());
-  if (time_zone_map != nullptr) {
-    // Existing time_zone::Impl* entries are in the wild, so we can't delete
-    // them. Instead, we move them to a private container, where they are
-    // logically unreachable but not "leaked".  Future requests will result
-    // in reloading the data.
-    static auto* cleared = new std::deque<const time_zone::Impl*>;
-    for (const auto& element : *time_zone_map) {
-      cleared->push_back(element.second);
-    }
-    time_zone_map->clear();
-  }
-}
-
-time_zone::Impl::Impl(const std::string& name)
-    : name_(name), zone_(TimeZoneIf::Load(name_)) {}
-
-const time_zone::Impl* time_zone::Impl::UTCImpl() {
-  static const Impl* utc_impl = new Impl("UTC");  // never fails
-  return utc_impl;
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.h
deleted file mode 100644
index 7d747ba96617..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_impl.h
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
-
-#include <memory>
-#include <string>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-#include "time_zone_if.h"
-#include "time_zone_info.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// time_zone::Impl is the internal object referenced by a cctz::time_zone.
-class time_zone::Impl {
- public:
-  // The UTC time zone. Also used for other time zones that fail to load.
-  static time_zone UTC();
-
-  // Load a named time zone. Returns false if the name is invalid, or if
-  // some other kind of error occurs. Note that loading "UTC" never fails.
-  static bool LoadTimeZone(const std::string& name, time_zone* tz);
-
-  // Clears the map of cached time zones.  Primarily for use in benchmarks
-  // that gauge the performance of loading/parsing the time-zone data.
-  static void ClearTimeZoneMapTestOnly();
-
-  // The primary key is the time-zone ID (e.g., "America/New_York").
-  const std::string& Name() const {
-    // TODO: It would nice if the zoneinfo data included the zone name.
-    return name_;
-  }
-
-  // Breaks a time_point down to civil-time components in this time zone.
-  time_zone::absolute_lookup BreakTime(const time_point<seconds>& tp) const {
-    return zone_->BreakTime(tp);
-  }
-
-  // Converts the civil-time components in this time zone into a time_point.
-  // That is, the opposite of BreakTime(). The requested civil time may be
-  // ambiguous or illegal due to a change of UTC offset.
-  time_zone::civil_lookup MakeTime(const civil_second& cs) const {
-    return zone_->MakeTime(cs);
-  }
-
-  // Finds the time of the next/previous offset change in this time zone.
-  bool NextTransition(const time_point<seconds>& tp,
-                      time_zone::civil_transition* trans) const {
-    return zone_->NextTransition(tp, trans);
-  }
-  bool PrevTransition(const time_point<seconds>& tp,
-                      time_zone::civil_transition* trans) const {
-    return zone_->PrevTransition(tp, trans);
-  }
-
-  // Returns an implementation-defined version string for this time zone.
-  std::string Version() const { return zone_->Version(); }
-
-  // Returns an implementation-defined description of this time zone.
-  std::string Description() const { return zone_->Description(); }
-
- private:
-  explicit Impl(const std::string& name);
-  static const Impl* UTCImpl();
-
-  const std::string name_;
-  std::unique_ptr<TimeZoneIf> zone_;
-};
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.cc
deleted file mode 100644
index 8039353e585e..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.cc
+++ /dev/null
@@ -1,965 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-// This file implements the TimeZoneIf interface using the "zoneinfo"
-// data provided by the IANA Time Zone Database (i.e., the only real game
-// in town).
-//
-// TimeZoneInfo represents the history of UTC-offset changes within a time
-// zone. Most changes are due to daylight-saving rules, but occasionally
-// shifts are made to the time-zone's base offset. The database only attempts
-// to be definitive for times since 1970, so be wary of local-time conversions
-// before that. Also, rule and zone-boundary changes are made at the whim
-// of governments, so the conversion of future times needs to be taken with
-// a grain of salt.
-//
-// For more information see tzfile(5), http://www.iana.org/time-zones, or
-// https://en.wikipedia.org/wiki/Zoneinfo.
-//
-// Note that we assume the proleptic Gregorian calendar and 60-second
-// minutes throughout.
-
-#include "time_zone_info.h"
-
-#include <algorithm>
-#include <cassert>
-#include <chrono>
-#include <cstdint>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <functional>
-#include <memory>
-#include <sstream>
-#include <string>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "time_zone_fixed.h"
-#include "time_zone_posix.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-inline bool IsLeap(year_t year) {
-  return (year % 4) == 0 && ((year % 100) != 0 || (year % 400) == 0);
-}
-
-// The number of days in non-leap and leap years respectively.
-const std::int_least32_t kDaysPerYear[2] = {365, 366};
-
-// The day offsets of the beginning of each (1-based) month in non-leap and
-// leap years respectively (e.g., 335 days before December in a leap year).
-const std::int_least16_t kMonthOffsets[2][1 + 12 + 1] = {
-    {-1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
-    {-1, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
-};
-
-// We reject leap-second encoded zoneinfo and so assume 60-second minutes.
-const std::int_least32_t kSecsPerDay = 24 * 60 * 60;
-
-// 400-year chunks always have 146097 days (20871 weeks).
-const std::int_least64_t kSecsPer400Years = 146097LL * kSecsPerDay;
-
-// Like kDaysPerYear[] but scaled up by a factor of kSecsPerDay.
-const std::int_least32_t kSecsPerYear[2] = {
-    365 * kSecsPerDay,
-    366 * kSecsPerDay,
-};
-
-// Convert a cctz::weekday to a POSIX TZ weekday number (0==Sun, ..., 6=Sat).
-inline int ToPosixWeekday(weekday wd) {
-  switch (wd) {
-    case weekday::sunday:
-      return 0;
-    case weekday::monday:
-      return 1;
-    case weekday::tuesday:
-      return 2;
-    case weekday::wednesday:
-      return 3;
-    case weekday::thursday:
-      return 4;
-    case weekday::friday:
-      return 5;
-    case weekday::saturday:
-      return 6;
-  }
-  return 0; /*NOTREACHED*/
-}
-
-// Single-byte, unsigned numeric values are encoded directly.
-inline std::uint_fast8_t Decode8(const char* cp) {
-  return static_cast<std::uint_fast8_t>(*cp) & 0xff;
-}
-
-// Multi-byte, numeric values are encoded using a MSB first,
-// twos-complement representation. These helpers decode, from
-// the given address, 4-byte and 8-byte values respectively.
-// Note: If int_fastXX_t == intXX_t and this machine is not
-// twos complement, then there will be at least one input value
-// we cannot represent.
-std::int_fast32_t Decode32(const char* cp) {
-  std::uint_fast32_t v = 0;
-  for (int i = 0; i != (32 / 8); ++i) v = (v << 8) | Decode8(cp++);
-  const std::int_fast32_t s32max = 0x7fffffff;
-  const auto s32maxU = static_cast<std::uint_fast32_t>(s32max);
-  if (v <= s32maxU) return static_cast<std::int_fast32_t>(v);
-  return static_cast<std::int_fast32_t>(v - s32maxU - 1) - s32max - 1;
-}
-
-std::int_fast64_t Decode64(const char* cp) {
-  std::uint_fast64_t v = 0;
-  for (int i = 0; i != (64 / 8); ++i) v = (v << 8) | Decode8(cp++);
-  const std::int_fast64_t s64max = 0x7fffffffffffffff;
-  const auto s64maxU = static_cast<std::uint_fast64_t>(s64max);
-  if (v <= s64maxU) return static_cast<std::int_fast64_t>(v);
-  return static_cast<std::int_fast64_t>(v - s64maxU - 1) - s64max - 1;
-}
-
-// Generate a year-relative offset for a PosixTransition.
-std::int_fast64_t TransOffset(bool leap_year, int jan1_weekday,
-                              const PosixTransition& pt) {
-  std::int_fast64_t days = 0;
-  switch (pt.date.fmt) {
-    case PosixTransition::J: {
-      days = pt.date.j.day;
-      if (!leap_year || days < kMonthOffsets[1][3]) days -= 1;
-      break;
-    }
-    case PosixTransition::N: {
-      days = pt.date.n.day;
-      break;
-    }
-    case PosixTransition::M: {
-      const bool last_week = (pt.date.m.week == 5);
-      days = kMonthOffsets[leap_year][pt.date.m.month + last_week];
-      const std::int_fast64_t weekday = (jan1_weekday + days) % 7;
-      if (last_week) {
-        days -= (weekday + 7 - 1 - pt.date.m.weekday) % 7 + 1;
-      } else {
-        days += (pt.date.m.weekday + 7 - weekday) % 7;
-        days += (pt.date.m.week - 1) * 7;
-      }
-      break;
-    }
-  }
-  return (days * kSecsPerDay) + pt.time.offset;
-}
-
-inline time_zone::civil_lookup MakeUnique(const time_point<seconds>& tp) {
-  time_zone::civil_lookup cl;
-  cl.kind = time_zone::civil_lookup::UNIQUE;
-  cl.pre = cl.trans = cl.post = tp;
-  return cl;
-}
-
-inline time_zone::civil_lookup MakeUnique(std::int_fast64_t unix_time) {
-  return MakeUnique(FromUnixSeconds(unix_time));
-}
-
-inline time_zone::civil_lookup MakeSkipped(const Transition& tr,
-                                           const civil_second& cs) {
-  time_zone::civil_lookup cl;
-  cl.kind = time_zone::civil_lookup::SKIPPED;
-  cl.pre = FromUnixSeconds(tr.unix_time - 1 + (cs - tr.prev_civil_sec));
-  cl.trans = FromUnixSeconds(tr.unix_time);
-  cl.post = FromUnixSeconds(tr.unix_time - (tr.civil_sec - cs));
-  return cl;
-}
-
-inline time_zone::civil_lookup MakeRepeated(const Transition& tr,
-                                            const civil_second& cs) {
-  time_zone::civil_lookup cl;
-  cl.kind = time_zone::civil_lookup::REPEATED;
-  cl.pre = FromUnixSeconds(tr.unix_time - 1 - (tr.prev_civil_sec - cs));
-  cl.trans = FromUnixSeconds(tr.unix_time);
-  cl.post = FromUnixSeconds(tr.unix_time + (cs - tr.civil_sec));
-  return cl;
-}
-
-inline civil_second YearShift(const civil_second& cs, year_t shift) {
-  return civil_second(cs.year() + shift, cs.month(), cs.day(), cs.hour(),
-                      cs.minute(), cs.second());
-}
-
-}  // namespace
-
-// What (no leap-seconds) UTC+seconds zoneinfo would look like.
-bool TimeZoneInfo::ResetToBuiltinUTC(const seconds& offset) {
-  transition_types_.resize(1);
-  TransitionType& tt(transition_types_.back());
-  tt.utc_offset = static_cast<std::int_least32_t>(offset.count());
-  tt.is_dst = false;
-  tt.abbr_index = 0;
-
-  // We temporarily add some redundant, contemporary (2015 through 2025)
-  // transitions for performance reasons.  See TimeZoneInfo::LocalTime().
-  // TODO: Fix the performance issue and remove the extra transitions.
-  transitions_.clear();
-  transitions_.reserve(12);
-  for (const std::int_fast64_t unix_time : {
-           -(1LL << 59),  // a "first half" transition
-           1420070400LL,  // 2015-01-01T00:00:00+00:00
-           1451606400LL,  // 2016-01-01T00:00:00+00:00
-           1483228800LL,  // 2017-01-01T00:00:00+00:00
-           1514764800LL,  // 2018-01-01T00:00:00+00:00
-           1546300800LL,  // 2019-01-01T00:00:00+00:00
-           1577836800LL,  // 2020-01-01T00:00:00+00:00
-           1609459200LL,  // 2021-01-01T00:00:00+00:00
-           1640995200LL,  // 2022-01-01T00:00:00+00:00
-           1672531200LL,  // 2023-01-01T00:00:00+00:00
-           1704067200LL,  // 2024-01-01T00:00:00+00:00
-           1735689600LL,  // 2025-01-01T00:00:00+00:00
-       }) {
-    Transition& tr(*transitions_.emplace(transitions_.end()));
-    tr.unix_time = unix_time;
-    tr.type_index = 0;
-    tr.civil_sec = LocalTime(tr.unix_time, tt).cs;
-    tr.prev_civil_sec = tr.civil_sec - 1;
-  }
-
-  default_transition_type_ = 0;
-  abbreviations_ = FixedOffsetToAbbr(offset);
-  abbreviations_.append(1, '\0');
-  future_spec_.clear();  // never needed for a fixed-offset zone
-  extended_ = false;
-
-  tt.civil_max = LocalTime(seconds::max().count(), tt).cs;
-  tt.civil_min = LocalTime(seconds::min().count(), tt).cs;
-
-  transitions_.shrink_to_fit();
-  return true;
-}
-
-// Builds the in-memory header using the raw bytes from the file.
-bool TimeZoneInfo::Header::Build(const tzhead& tzh) {
-  std::int_fast32_t v;
-  if ((v = Decode32(tzh.tzh_timecnt)) < 0) return false;
-  timecnt = static_cast<std::size_t>(v);
-  if ((v = Decode32(tzh.tzh_typecnt)) < 0) return false;
-  typecnt = static_cast<std::size_t>(v);
-  if ((v = Decode32(tzh.tzh_charcnt)) < 0) return false;
-  charcnt = static_cast<std::size_t>(v);
-  if ((v = Decode32(tzh.tzh_leapcnt)) < 0) return false;
-  leapcnt = static_cast<std::size_t>(v);
-  if ((v = Decode32(tzh.tzh_ttisstdcnt)) < 0) return false;
-  ttisstdcnt = static_cast<std::size_t>(v);
-  if ((v = Decode32(tzh.tzh_ttisutcnt)) < 0) return false;
-  ttisutcnt = static_cast<std::size_t>(v);
-  return true;
-}
-
-// How many bytes of data are associated with this header. The result
-// depends upon whether this is a section with 4-byte or 8-byte times.
-std::size_t TimeZoneInfo::Header::DataLength(std::size_t time_len) const {
-  std::size_t len = 0;
-  len += (time_len + 1) * timecnt;  // unix_time + type_index
-  len += (4 + 1 + 1) * typecnt;     // utc_offset + is_dst + abbr_index
-  len += 1 * charcnt;               // abbreviations
-  len += (time_len + 4) * leapcnt;  // leap-time + TAI-UTC
-  len += 1 * ttisstdcnt;            // UTC/local indicators
-  len += 1 * ttisutcnt;             // standard/wall indicators
-  return len;
-}
-
-// zic(8) can generate no-op transitions when a zone changes rules at an
-// instant when there is actually no discontinuity.  So we check whether
-// two transitions have equivalent types (same offset/is_dst/abbr).
-bool TimeZoneInfo::EquivTransitions(std::uint_fast8_t tt1_index,
-                                    std::uint_fast8_t tt2_index) const {
-  if (tt1_index == tt2_index) return true;
-  const TransitionType& tt1(transition_types_[tt1_index]);
-  const TransitionType& tt2(transition_types_[tt2_index]);
-  if (tt1.utc_offset != tt2.utc_offset) return false;
-  if (tt1.is_dst != tt2.is_dst) return false;
-  if (tt1.abbr_index != tt2.abbr_index) return false;
-  return true;
-}
-
-// Find/make a transition type with these attributes.
-bool TimeZoneInfo::GetTransitionType(std::int_fast32_t utc_offset, bool is_dst,
-                                     const std::string& abbr,
-                                     std::uint_least8_t* index) {
-  std::size_t type_index = 0;
-  std::size_t abbr_index = abbreviations_.size();
-  for (; type_index != transition_types_.size(); ++type_index) {
-    const TransitionType& tt(transition_types_[type_index]);
-    const char* tt_abbr = &abbreviations_[tt.abbr_index];
-    if (tt_abbr == abbr) abbr_index = tt.abbr_index;
-    if (tt.utc_offset == utc_offset && tt.is_dst == is_dst) {
-      if (abbr_index == tt.abbr_index) break;  // reuse
-    }
-  }
-  if (type_index > 255 || abbr_index > 255) {
-    // No index space (8 bits) available for a new type or abbreviation.
-    return false;
-  }
-  if (type_index == transition_types_.size()) {
-    TransitionType& tt(*transition_types_.emplace(transition_types_.end()));
-    tt.utc_offset = static_cast<std::int_least32_t>(utc_offset);
-    tt.is_dst = is_dst;
-    if (abbr_index == abbreviations_.size()) {
-      abbreviations_.append(abbr);
-      abbreviations_.append(1, '\0');
-    }
-    tt.abbr_index = static_cast<std::uint_least8_t>(abbr_index);
-  }
-  *index = static_cast<std::uint_least8_t>(type_index);
-  return true;
-}
-
-// Use the POSIX-TZ-environment-variable-style string to handle times
-// in years after the last transition stored in the zoneinfo data.
-bool TimeZoneInfo::ExtendTransitions() {
-  extended_ = false;
-  if (future_spec_.empty()) return true;  // last transition prevails
-
-  PosixTimeZone posix;
-  if (!ParsePosixSpec(future_spec_, &posix)) return false;
-
-  // Find transition type for the future std specification.
-  std::uint_least8_t std_ti;
-  if (!GetTransitionType(posix.std_offset, false, posix.std_abbr, &std_ti))
-    return false;
-
-  if (posix.dst_abbr.empty()) {  // std only
-    // The future specification should match the last transition, and
-    // that means that handling the future will fall out naturally.
-    return EquivTransitions(transitions_.back().type_index, std_ti);
-  }
-
-  // Find transition type for the future dst specification.
-  std::uint_least8_t dst_ti;
-  if (!GetTransitionType(posix.dst_offset, true, posix.dst_abbr, &dst_ti))
-    return false;
-
-  // Extend the transitions for an additional 400 years using the
-  // future specification. Years beyond those can be handled by
-  // mapping back to a cycle-equivalent year within that range.
-  // We may need two additional transitions for the current year.
-  transitions_.reserve(transitions_.size() + 400 * 2 + 2);
-  extended_ = true;
-
-  const Transition& last(transitions_.back());
-  const std::int_fast64_t last_time = last.unix_time;
-  const TransitionType& last_tt(transition_types_[last.type_index]);
-  last_year_ = LocalTime(last_time, last_tt).cs.year();
-  bool leap_year = IsLeap(last_year_);
-  const civil_second jan1(last_year_);
-  std::int_fast64_t jan1_time = jan1 - civil_second();
-  int jan1_weekday = ToPosixWeekday(get_weekday(jan1));
-
-  Transition dst = {0, dst_ti, civil_second(), civil_second()};
-  Transition std = {0, std_ti, civil_second(), civil_second()};
-  for (const year_t limit = last_year_ + 400;; ++last_year_) {
-    auto dst_trans_off = TransOffset(leap_year, jan1_weekday, posix.dst_start);
-    auto std_trans_off = TransOffset(leap_year, jan1_weekday, posix.dst_end);
-    dst.unix_time = jan1_time + dst_trans_off - posix.std_offset;
-    std.unix_time = jan1_time + std_trans_off - posix.dst_offset;
-    const auto* ta = dst.unix_time < std.unix_time ? &dst : &std;
-    const auto* tb = dst.unix_time < std.unix_time ? &std : &dst;
-    if (last_time < tb->unix_time) {
-      if (last_time < ta->unix_time) transitions_.push_back(*ta);
-      transitions_.push_back(*tb);
-    }
-    if (last_year_ == limit) break;
-    jan1_time += kSecsPerYear[leap_year];
-    jan1_weekday = (jan1_weekday + kDaysPerYear[leap_year]) % 7;
-    leap_year = !leap_year && IsLeap(last_year_ + 1);
-  }
-
-  return true;
-}
-
-bool TimeZoneInfo::Load(ZoneInfoSource* zip) {
-  // Read and validate the header.
-  tzhead tzh;
-  if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh)) return false;
-  if (strncmp(tzh.tzh_magic, TZ_MAGIC, sizeof(tzh.tzh_magic)) != 0)
-    return false;
-  Header hdr;
-  if (!hdr.Build(tzh)) return false;
-  std::size_t time_len = 4;
-  if (tzh.tzh_version[0] != '\0') {
-    // Skip the 4-byte data.
-    if (zip->Skip(hdr.DataLength(time_len)) != 0) return false;
-    // Read and validate the header for the 8-byte data.
-    if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh)) return false;
-    if (strncmp(tzh.tzh_magic, TZ_MAGIC, sizeof(tzh.tzh_magic)) != 0)
-      return false;
-    if (tzh.tzh_version[0] == '\0') return false;
-    if (!hdr.Build(tzh)) return false;
-    time_len = 8;
-  }
-  if (hdr.typecnt == 0) return false;
-  if (hdr.leapcnt != 0) {
-    // This code assumes 60-second minutes so we do not want
-    // the leap-second encoded zoneinfo. We could reverse the
-    // compensation, but the "right" encoding is rarely used
-    // so currently we simply reject such data.
-    return false;
-  }
-  if (hdr.ttisstdcnt != 0 && hdr.ttisstdcnt != hdr.typecnt) return false;
-  if (hdr.ttisutcnt != 0 && hdr.ttisutcnt != hdr.typecnt) return false;
-
-  // Read the data into a local buffer.
-  std::size_t len = hdr.DataLength(time_len);
-  std::vector<char> tbuf(len);
-  if (zip->Read(tbuf.data(), len) != len) return false;
-  const char* bp = tbuf.data();
-
-  // Decode and validate the transitions.
-  transitions_.reserve(hdr.timecnt + 2);
-  transitions_.resize(hdr.timecnt);
-  for (std::size_t i = 0; i != hdr.timecnt; ++i) {
-    transitions_[i].unix_time = (time_len == 4) ? Decode32(bp) : Decode64(bp);
-    bp += time_len;
-    if (i != 0) {
-      // Check that the transitions are ordered by time (as zic guarantees).
-      if (!Transition::ByUnixTime()(transitions_[i - 1], transitions_[i]))
-        return false;  // out of order
-    }
-  }
-  bool seen_type_0 = false;
-  for (std::size_t i = 0; i != hdr.timecnt; ++i) {
-    transitions_[i].type_index = Decode8(bp++);
-    if (transitions_[i].type_index >= hdr.typecnt) return false;
-    if (transitions_[i].type_index == 0) seen_type_0 = true;
-  }
-
-  // Decode and validate the transition types.
-  transition_types_.reserve(hdr.typecnt + 2);
-  transition_types_.resize(hdr.typecnt);
-  for (std::size_t i = 0; i != hdr.typecnt; ++i) {
-    transition_types_[i].utc_offset =
-        static_cast<std::int_least32_t>(Decode32(bp));
-    if (transition_types_[i].utc_offset >= kSecsPerDay ||
-        transition_types_[i].utc_offset <= -kSecsPerDay)
-      return false;
-    bp += 4;
-    transition_types_[i].is_dst = (Decode8(bp++) != 0);
-    transition_types_[i].abbr_index = Decode8(bp++);
-    if (transition_types_[i].abbr_index >= hdr.charcnt) return false;
-  }
-
-  // Determine the before-first-transition type.
-  default_transition_type_ = 0;
-  if (seen_type_0 && hdr.timecnt != 0) {
-    std::uint_fast8_t index = 0;
-    if (transition_types_[0].is_dst) {
-      index = transitions_[0].type_index;
-      while (index != 0 && transition_types_[index].is_dst) --index;
-    }
-    while (index != hdr.typecnt && transition_types_[index].is_dst) ++index;
-    if (index != hdr.typecnt) default_transition_type_ = index;
-  }
-
-  // Copy all the abbreviations.
-  abbreviations_.reserve(hdr.charcnt + 10);
-  abbreviations_.assign(bp, hdr.charcnt);
-  bp += hdr.charcnt;
-
-  // Skip the unused portions. We've already dispensed with leap-second
-  // encoded zoneinfo. The ttisstd/ttisgmt indicators only apply when
-  // interpreting a POSIX spec that does not include start/end rules, and
-  // that isn't the case here (see "zic -p").
-  bp += (8 + 4) * hdr.leapcnt;  // leap-time + TAI-UTC
-  bp += 1 * hdr.ttisstdcnt;     // UTC/local indicators
-  bp += 1 * hdr.ttisutcnt;      // standard/wall indicators
-  assert(bp == tbuf.data() + tbuf.size());
-
-  future_spec_.clear();
-  if (tzh.tzh_version[0] != '\0') {
-    // Snarf up the NL-enclosed future POSIX spec. Note
-    // that version '3' files utilize an extended format.
-    auto get_char = [](ZoneInfoSource* azip) -> int {
-      unsigned char ch;  // all non-EOF results are positive
-      return (azip->Read(&ch, 1) == 1) ? ch : EOF;
-    };
-    if (get_char(zip) != '\n') return false;
-    for (int c = get_char(zip); c != '\n'; c = get_char(zip)) {
-      if (c == EOF) return false;
-      future_spec_.push_back(static_cast<char>(c));
-    }
-  }
-
-  // We don't check for EOF so that we're forwards compatible.
-
-  // If we did not find version information during the standard loading
-  // process (as of tzh_version '3' that is unsupported), then ask the
-  // ZoneInfoSource for any out-of-bound version string it may be privy to.
-  if (version_.empty()) {
-    version_ = zip->Version();
-  }
-
-  // Trim redundant transitions. zic may have added these to work around
-  // differences between the glibc and reference implementations (see
-  // zic.c:dontmerge) and the Qt library (see zic.c:WORK_AROUND_QTBUG_53071).
-  // For us, they just get in the way when we do future_spec_ extension.
-  while (hdr.timecnt > 1) {
-    if (!EquivTransitions(transitions_[hdr.timecnt - 1].type_index,
-                          transitions_[hdr.timecnt - 2].type_index)) {
-      break;
-    }
-    hdr.timecnt -= 1;
-  }
-  transitions_.resize(hdr.timecnt);
-
-  // Ensure that there is always a transition in the first half of the
-  // time line (the second half is handled below) so that the signed
-  // difference between a civil_second and the civil_second of its
-  // previous transition is always representable, without overflow.
-  if (transitions_.empty() || transitions_.front().unix_time >= 0) {
-    Transition& tr(*transitions_.emplace(transitions_.begin()));
-    tr.unix_time = -(1LL << 59);  // -18267312070-10-26T17:01:52+00:00
-    tr.type_index = default_transition_type_;
-  }
-
-  // Extend the transitions using the future specification.
-  if (!ExtendTransitions()) return false;
-
-  // Ensure that there is always a transition in the second half of the
-  // time line (the first half is handled above) so that the signed
-  // difference between a civil_second and the civil_second of its
-  // previous transition is always representable, without overflow.
-  const Transition& last(transitions_.back());
-  if (last.unix_time < 0) {
-    const std::uint_fast8_t type_index = last.type_index;
-    Transition& tr(*transitions_.emplace(transitions_.end()));
-    tr.unix_time = 2147483647;  // 2038-01-19T03:14:07+00:00
-    tr.type_index = type_index;
-  }
-
-  // Compute the local civil time for each transition and the preceding
-  // second. These will be used for reverse conversions in MakeTime().
-  const TransitionType* ttp = &transition_types_[default_transition_type_];
-  for (std::size_t i = 0; i != transitions_.size(); ++i) {
-    Transition& tr(transitions_[i]);
-    tr.prev_civil_sec = LocalTime(tr.unix_time, *ttp).cs - 1;
-    ttp = &transition_types_[tr.type_index];
-    tr.civil_sec = LocalTime(tr.unix_time, *ttp).cs;
-    if (i != 0) {
-      // Check that the transitions are ordered by civil time. Essentially
-      // this means that an offset change cannot cross another such change.
-      // No one does this in practice, and we depend on it in MakeTime().
-      if (!Transition::ByCivilTime()(transitions_[i - 1], tr))
-        return false;  // out of order
-    }
-  }
-
-  // Compute the maximum/minimum civil times that can be converted to a
-  // time_point<seconds> for each of the zone's transition types.
-  for (auto& tt : transition_types_) {
-    tt.civil_max = LocalTime(seconds::max().count(), tt).cs;
-    tt.civil_min = LocalTime(seconds::min().count(), tt).cs;
-  }
-
-  transitions_.shrink_to_fit();
-  return true;
-}
-
-namespace {
-
-// fopen(3) adaptor.
-inline FILE* FOpen(const char* path, const char* mode) {
-#if defined(_MSC_VER)
-  FILE* fp;
-  if (fopen_s(&fp, path, mode) != 0) fp = nullptr;
-  return fp;
-#else
-  return fopen(path, mode);  // TODO: Enable the close-on-exec flag.
-#endif
-}
-
-// A stdio(3)-backed implementation of ZoneInfoSource.
-class FileZoneInfoSource : public ZoneInfoSource {
- public:
-  static std::unique_ptr<ZoneInfoSource> Open(const std::string& name);
-
-  std::size_t Read(void* ptr, std::size_t size) override {
-    size = std::min(size, len_);
-    std::size_t nread = fread(ptr, 1, size, fp_.get());
-    len_ -= nread;
-    return nread;
-  }
-  int Skip(std::size_t offset) override {
-    offset = std::min(offset, len_);
-    int rc = fseek(fp_.get(), static_cast<long>(offset), SEEK_CUR);
-    if (rc == 0) len_ -= offset;
-    return rc;
-  }
-  std::string Version() const override {
-    // TODO: It would nice if the zoneinfo data included the tzdb version.
-    return std::string();
-  }
-
- protected:
-  explicit FileZoneInfoSource(
-      FILE* fp, std::size_t len = std::numeric_limits<std::size_t>::max())
-      : fp_(fp, fclose), len_(len) {}
-
- private:
-  std::unique_ptr<FILE, int (*)(FILE*)> fp_;
-  std::size_t len_;
-};
-
-std::unique_ptr<ZoneInfoSource> FileZoneInfoSource::Open(
-    const std::string& name) {
-  // Use of the "file:" prefix is intended for testing purposes only.
-  const std::size_t pos = (name.compare(0, 5, "file:") == 0) ? 5 : 0;
-
-  // Map the time-zone name to a path name.
-  std::string path;
-  if (pos == name.size() || name[pos] != '/') {
-    const char* tzdir = "/usr/share/zoneinfo";
-    char* tzdir_env = nullptr;
-#if defined(_MSC_VER)
-    _dupenv_s(&tzdir_env, nullptr, "TZDIR");
-#else
-    tzdir_env = std::getenv("TZDIR");
-#endif
-    if (tzdir_env && *tzdir_env) tzdir = tzdir_env;
-    path += tzdir;
-    path += '/';
-#if defined(_MSC_VER)
-    free(tzdir_env);
-#endif
-  }
-  path.append(name, pos, std::string::npos);
-
-  // Open the zoneinfo file.
-  FILE* fp = FOpen(path.c_str(), "rb");
-  if (fp == nullptr) return nullptr;
-  std::size_t length = 0;
-  if (fseek(fp, 0, SEEK_END) == 0) {
-    long offset = ftell(fp);
-    if (offset >= 0) {
-      length = static_cast<std::size_t>(offset);
-    }
-    rewind(fp);
-  }
-  return std::unique_ptr<ZoneInfoSource>(new FileZoneInfoSource(fp, length));
-}
-
-class AndroidZoneInfoSource : public FileZoneInfoSource {
- public:
-  static std::unique_ptr<ZoneInfoSource> Open(const std::string& name);
-  std::string Version() const override { return version_; }
-
- private:
-  explicit AndroidZoneInfoSource(FILE* fp, std::size_t len, const char* vers)
-      : FileZoneInfoSource(fp, len), version_(vers) {}
-  std::string version_;
-};
-
-std::unique_ptr<ZoneInfoSource> AndroidZoneInfoSource::Open(
-    const std::string& name) {
-  // Use of the "file:" prefix is intended for testing purposes only.
-  const std::size_t pos = (name.compare(0, 5, "file:") == 0) ? 5 : 0;
-
-  // See Android's libc/tzcode/bionic.cpp for additional information.
-  for (const char* tzdata : {"/data/misc/zoneinfo/current/tzdata",
-                             "/system/usr/share/zoneinfo/tzdata"}) {
-    std::unique_ptr<FILE, int (*)(FILE*)> fp(FOpen(tzdata, "rb"), fclose);
-    if (fp.get() == nullptr) continue;
-
-    char hbuf[24];  // covers header.zonetab_offset too
-    if (fread(hbuf, 1, sizeof(hbuf), fp.get()) != sizeof(hbuf)) continue;
-    if (strncmp(hbuf, "tzdata", 6) != 0) continue;
-    const char* vers = (hbuf[11] == '\0') ? hbuf + 6 : "";
-    const std::int_fast32_t index_offset = Decode32(hbuf + 12);
-    const std::int_fast32_t data_offset = Decode32(hbuf + 16);
-    if (index_offset < 0 || data_offset < index_offset) continue;
-    if (fseek(fp.get(), static_cast<long>(index_offset), SEEK_SET) != 0)
-      continue;
-
-    char ebuf[52];  // covers entry.unused too
-    const std::size_t index_size =
-        static_cast<std::size_t>(data_offset - index_offset);
-    const std::size_t zonecnt = index_size / sizeof(ebuf);
-    if (zonecnt * sizeof(ebuf) != index_size) continue;
-    for (std::size_t i = 0; i != zonecnt; ++i) {
-      if (fread(ebuf, 1, sizeof(ebuf), fp.get()) != sizeof(ebuf)) break;
-      const std::int_fast32_t start = data_offset + Decode32(ebuf + 40);
-      const std::int_fast32_t length = Decode32(ebuf + 44);
-      if (start < 0 || length < 0) break;
-      ebuf[40] = '\0';  // ensure zone name is NUL terminated
-      if (strcmp(name.c_str() + pos, ebuf) == 0) {
-        if (fseek(fp.get(), static_cast<long>(start), SEEK_SET) != 0) break;
-        return std::unique_ptr<ZoneInfoSource>(new AndroidZoneInfoSource(
-            fp.release(), static_cast<std::size_t>(length), vers));
-      }
-    }
-  }
-
-  return nullptr;
-}
-
-}  // namespace
-
-bool TimeZoneInfo::Load(const std::string& name) {
-  // We can ensure that the loading of UTC or any other fixed-offset
-  // zone never fails because the simple, fixed-offset state can be
-  // internally generated. Note that this depends on our choice to not
-  // accept leap-second encoded ("right") zoneinfo.
-  auto offset = seconds::zero();
-  if (FixedOffsetFromName(name, &offset)) {
-    return ResetToBuiltinUTC(offset);
-  }
-
-  // Find and use a ZoneInfoSource to load the named zone.
-  auto zip = cctz_extension::zone_info_source_factory(
-      name, [](const std::string& n) -> std::unique_ptr<ZoneInfoSource> {
-        if (auto z = FileZoneInfoSource::Open(n)) return z;
-        if (auto z = AndroidZoneInfoSource::Open(n)) return z;
-        return nullptr;
-      });
-  return zip != nullptr && Load(zip.get());
-}
-
-// BreakTime() translation for a particular transition type.
-time_zone::absolute_lookup TimeZoneInfo::LocalTime(
-    std::int_fast64_t unix_time, const TransitionType& tt) const {
-  // A civil time in "+offset" looks like (time+offset) in UTC.
-  // Note: We perform two additions in the civil_second domain to
-  // sidestep the chance of overflow in (unix_time + tt.utc_offset).
-  return {(civil_second() + unix_time) + tt.utc_offset, tt.utc_offset,
-          tt.is_dst, &abbreviations_[tt.abbr_index]};
-}
-
-// BreakTime() translation for a particular transition.
-time_zone::absolute_lookup TimeZoneInfo::LocalTime(std::int_fast64_t unix_time,
-                                                   const Transition& tr) const {
-  const TransitionType& tt = transition_types_[tr.type_index];
-  // Note: (unix_time - tr.unix_time) will never overflow as we
-  // have ensured that there is always a "nearby" transition.
-  return {tr.civil_sec + (unix_time - tr.unix_time),  // TODO: Optimize.
-          tt.utc_offset, tt.is_dst, &abbreviations_[tt.abbr_index]};
-}
-
-// MakeTime() translation with a conversion-preserving +N * 400-year shift.
-time_zone::civil_lookup TimeZoneInfo::TimeLocal(const civil_second& cs,
-                                                year_t c4_shift) const {
-  assert(last_year_ - 400 < cs.year() && cs.year() <= last_year_);
-  time_zone::civil_lookup cl = MakeTime(cs);
-  if (c4_shift > seconds::max().count() / kSecsPer400Years) {
-    cl.pre = cl.trans = cl.post = time_point<seconds>::max();
-  } else {
-    const auto offset = seconds(c4_shift * kSecsPer400Years);
-    const auto limit = time_point<seconds>::max() - offset;
-    for (auto* tp : {&cl.pre, &cl.trans, &cl.post}) {
-      if (*tp > limit) {
-        *tp = time_point<seconds>::max();
-      } else {
-        *tp += offset;
-      }
-    }
-  }
-  return cl;
-}
-
-time_zone::absolute_lookup TimeZoneInfo::BreakTime(
-    const time_point<seconds>& tp) const {
-  std::int_fast64_t unix_time = ToUnixSeconds(tp);
-  const std::size_t timecnt = transitions_.size();
-  assert(timecnt != 0);  // We always add a transition.
-
-  if (unix_time < transitions_[0].unix_time) {
-    return LocalTime(unix_time, transition_types_[default_transition_type_]);
-  }
-  if (unix_time >= transitions_[timecnt - 1].unix_time) {
-    // After the last transition. If we extended the transitions using
-    // future_spec_, shift back to a supported year using the 400-year
-    // cycle of calendaric equivalence and then compensate accordingly.
-    if (extended_) {
-      const std::int_fast64_t diff =
-          unix_time - transitions_[timecnt - 1].unix_time;
-      const year_t shift = diff / kSecsPer400Years + 1;
-      const auto d = seconds(shift * kSecsPer400Years);
-      time_zone::absolute_lookup al = BreakTime(tp - d);
-      al.cs = YearShift(al.cs, shift * 400);
-      return al;
-    }
-    return LocalTime(unix_time, transitions_[timecnt - 1]);
-  }
-
-  const std::size_t hint = local_time_hint_.load(std::memory_order_relaxed);
-  if (0 < hint && hint < timecnt) {
-    if (transitions_[hint - 1].unix_time <= unix_time) {
-      if (unix_time < transitions_[hint].unix_time) {
-        return LocalTime(unix_time, transitions_[hint - 1]);
-      }
-    }
-  }
-
-  const Transition target = {unix_time, 0, civil_second(), civil_second()};
-  const Transition* begin = &transitions_[0];
-  const Transition* tr = std::upper_bound(begin, begin + timecnt, target,
-                                          Transition::ByUnixTime());
-  local_time_hint_.store(static_cast<std::size_t>(tr - begin),
-                         std::memory_order_relaxed);
-  return LocalTime(unix_time, *--tr);
-}
-
-time_zone::civil_lookup TimeZoneInfo::MakeTime(const civil_second& cs) const {
-  const std::size_t timecnt = transitions_.size();
-  assert(timecnt != 0);  // We always add a transition.
-
-  // Find the first transition after our target civil time.
-  const Transition* tr = nullptr;
-  const Transition* begin = &transitions_[0];
-  const Transition* end = begin + timecnt;
-  if (cs < begin->civil_sec) {
-    tr = begin;
-  } else if (cs >= transitions_[timecnt - 1].civil_sec) {
-    tr = end;
-  } else {
-    const std::size_t hint = time_local_hint_.load(std::memory_order_relaxed);
-    if (0 < hint && hint < timecnt) {
-      if (transitions_[hint - 1].civil_sec <= cs) {
-        if (cs < transitions_[hint].civil_sec) {
-          tr = begin + hint;
-        }
-      }
-    }
-    if (tr == nullptr) {
-      const Transition target = {0, 0, cs, civil_second()};
-      tr = std::upper_bound(begin, end, target, Transition::ByCivilTime());
-      time_local_hint_.store(static_cast<std::size_t>(tr - begin),
-                             std::memory_order_relaxed);
-    }
-  }
-
-  if (tr == begin) {
-    if (tr->prev_civil_sec >= cs) {
-      // Before first transition, so use the default offset.
-      const TransitionType& tt(transition_types_[default_transition_type_]);
-      if (cs < tt.civil_min) return MakeUnique(time_point<seconds>::min());
-      return MakeUnique(cs - (civil_second() + tt.utc_offset));
-    }
-    // tr->prev_civil_sec < cs < tr->civil_sec
-    return MakeSkipped(*tr, cs);
-  }
-
-  if (tr == end) {
-    if (cs > (--tr)->prev_civil_sec) {
-      // After the last transition. If we extended the transitions using
-      // future_spec_, shift back to a supported year using the 400-year
-      // cycle of calendaric equivalence and then compensate accordingly.
-      if (extended_ && cs.year() > last_year_) {
-        const year_t shift = (cs.year() - last_year_ - 1) / 400 + 1;
-        return TimeLocal(YearShift(cs, shift * -400), shift);
-      }
-      const TransitionType& tt(transition_types_[tr->type_index]);
-      if (cs > tt.civil_max) return MakeUnique(time_point<seconds>::max());
-      return MakeUnique(tr->unix_time + (cs - tr->civil_sec));
-    }
-    // tr->civil_sec <= cs <= tr->prev_civil_sec
-    return MakeRepeated(*tr, cs);
-  }
-
-  if (tr->prev_civil_sec < cs) {
-    // tr->prev_civil_sec < cs < tr->civil_sec
-    return MakeSkipped(*tr, cs);
-  }
-
-  if (cs <= (--tr)->prev_civil_sec) {
-    // tr->civil_sec <= cs <= tr->prev_civil_sec
-    return MakeRepeated(*tr, cs);
-  }
-
-  // In between transitions.
-  return MakeUnique(tr->unix_time + (cs - tr->civil_sec));
-}
-
-std::string TimeZoneInfo::Version() const { return version_; }
-
-std::string TimeZoneInfo::Description() const {
-  std::ostringstream oss;
-  oss << "#trans=" << transitions_.size();
-  oss << " #types=" << transition_types_.size();
-  oss << " spec='" << future_spec_ << "'";
-  return oss.str();
-}
-
-bool TimeZoneInfo::NextTransition(const time_point<seconds>& tp,
-                                  time_zone::civil_transition* trans) const {
-  if (transitions_.empty()) return false;
-  const Transition* begin = &transitions_[0];
-  const Transition* end = begin + transitions_.size();
-  if (begin->unix_time <= -(1LL << 59)) {
-    // Do not report the BIG_BANG found in some zoneinfo data as it is
-    // really a sentinel, not a transition.  See pre-2018f tz/zic.c.
-    ++begin;
-  }
-  std::int_fast64_t unix_time = ToUnixSeconds(tp);
-  const Transition target = {unix_time, 0, civil_second(), civil_second()};
-  const Transition* tr =
-      std::upper_bound(begin, end, target, Transition::ByUnixTime());
-  for (; tr != end; ++tr) {  // skip no-op transitions
-    std::uint_fast8_t prev_type_index =
-        (tr == begin) ? default_transition_type_ : tr[-1].type_index;
-    if (!EquivTransitions(prev_type_index, tr[0].type_index)) break;
-  }
-  // When tr == end we return false, ignoring future_spec_.
-  if (tr == end) return false;
-  trans->from = tr->prev_civil_sec + 1;
-  trans->to = tr->civil_sec;
-  return true;
-}
-
-bool TimeZoneInfo::PrevTransition(const time_point<seconds>& tp,
-                                  time_zone::civil_transition* trans) const {
-  if (transitions_.empty()) return false;
-  const Transition* begin = &transitions_[0];
-  const Transition* end = begin + transitions_.size();
-  if (begin->unix_time <= -(1LL << 59)) {
-    // Do not report the BIG_BANG found in some zoneinfo data as it is
-    // really a sentinel, not a transition.  See pre-2018f tz/zic.c.
-    ++begin;
-  }
-  std::int_fast64_t unix_time = ToUnixSeconds(tp);
-  if (FromUnixSeconds(unix_time) != tp) {
-    if (unix_time == std::numeric_limits<std::int_fast64_t>::max()) {
-      if (end == begin) return false;  // Ignore future_spec_.
-      trans->from = (--end)->prev_civil_sec + 1;
-      trans->to = end->civil_sec;
-      return true;
-    }
-    unix_time += 1;  // ceils
-  }
-  const Transition target = {unix_time, 0, civil_second(), civil_second()};
-  const Transition* tr =
-      std::lower_bound(begin, end, target, Transition::ByUnixTime());
-  for (; tr != begin; --tr) {  // skip no-op transitions
-    std::uint_fast8_t prev_type_index =
-        (tr - 1 == begin) ? default_transition_type_ : tr[-2].type_index;
-    if (!EquivTransitions(prev_type_index, tr[-1].type_index)) break;
-  }
-  // When tr == end we return the "last" transition, ignoring future_spec_.
-  if (tr == begin) return false;
-  trans->from = (--tr)->prev_civil_sec + 1;
-  trans->to = tr->civil_sec;
-  return true;
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.h
deleted file mode 100644
index 2467ff559d35..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_info.h
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_
-
-#include <atomic>
-#include <cstddef>
-#include <cstdint>
-#include <string>
-#include <vector>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-#include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
-#include "time_zone_if.h"
-#include "tzfile.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// A transition to a new UTC offset.
-struct Transition {
-  std::int_least64_t unix_time;   // the instant of this transition
-  std::uint_least8_t type_index;  // index of the transition type
-  civil_second civil_sec;         // local civil time of transition
-  civil_second prev_civil_sec;    // local civil time one second earlier
-
-  struct ByUnixTime {
-    inline bool operator()(const Transition& lhs, const Transition& rhs) const {
-      return lhs.unix_time < rhs.unix_time;
-    }
-  };
-  struct ByCivilTime {
-    inline bool operator()(const Transition& lhs, const Transition& rhs) const {
-      return lhs.civil_sec < rhs.civil_sec;
-    }
-  };
-};
-
-// The characteristics of a particular transition.
-struct TransitionType {
-  std::int_least32_t utc_offset;  // the new prevailing UTC offset
-  civil_second civil_max;         // max convertible civil time for offset
-  civil_second civil_min;         // min convertible civil time for offset
-  bool is_dst;                    // did we move into daylight-saving time
-  std::uint_least8_t abbr_index;  // index of the new abbreviation
-};
-
-// A time zone backed by the IANA Time Zone Database (zoneinfo).
-class TimeZoneInfo : public TimeZoneIf {
- public:
-  TimeZoneInfo() = default;
-  TimeZoneInfo(const TimeZoneInfo&) = delete;
-  TimeZoneInfo& operator=(const TimeZoneInfo&) = delete;
-
-  // Loads the zoneinfo for the given name, returning true if successful.
-  bool Load(const std::string& name);
-
-  // TimeZoneIf implementations.
-  time_zone::absolute_lookup BreakTime(
-      const time_point<seconds>& tp) const override;
-  time_zone::civil_lookup MakeTime(const civil_second& cs) const override;
-  bool NextTransition(const time_point<seconds>& tp,
-                      time_zone::civil_transition* trans) const override;
-  bool PrevTransition(const time_point<seconds>& tp,
-                      time_zone::civil_transition* trans) const override;
-  std::string Version() const override;
-  std::string Description() const override;
-
- private:
-  struct Header {            // counts of:
-    std::size_t timecnt;     // transition times
-    std::size_t typecnt;     // transition types
-    std::size_t charcnt;     // zone abbreviation characters
-    std::size_t leapcnt;     // leap seconds (we expect none)
-    std::size_t ttisstdcnt;  // UTC/local indicators (unused)
-    std::size_t ttisutcnt;   // standard/wall indicators (unused)
-
-    bool Build(const tzhead& tzh);
-    std::size_t DataLength(std::size_t time_len) const;
-  };
-
-  bool GetTransitionType(std::int_fast32_t utc_offset, bool is_dst,
-                         const std::string& abbr, std::uint_least8_t* index);
-  bool EquivTransitions(std::uint_fast8_t tt1_index,
-                        std::uint_fast8_t tt2_index) const;
-  bool ExtendTransitions();
-
-  bool ResetToBuiltinUTC(const seconds& offset);
-  bool Load(ZoneInfoSource* zip);
-
-  // Helpers for BreakTime() and MakeTime().
-  time_zone::absolute_lookup LocalTime(std::int_fast64_t unix_time,
-                                       const TransitionType& tt) const;
-  time_zone::absolute_lookup LocalTime(std::int_fast64_t unix_time,
-                                       const Transition& tr) const;
-  time_zone::civil_lookup TimeLocal(const civil_second& cs,
-                                    year_t c4_shift) const;
-
-  std::vector<Transition> transitions_;  // ordered by unix_time and civil_sec
-  std::vector<TransitionType> transition_types_;  // distinct transition types
-  std::uint_fast8_t default_transition_type_;     // for before first transition
-  std::string abbreviations_;  // all the NUL-terminated abbreviations
-
-  std::string version_;      // the tzdata version if available
-  std::string future_spec_;  // for after the last zic transition
-  bool extended_;            // future_spec_ was used to generate transitions
-  year_t last_year_;         // the final year of the generated transitions
-
-  // We remember the transitions found during the last BreakTime() and
-  // MakeTime() calls. If the next request is for the same transition we
-  // will avoid re-searching.
-  mutable std::atomic<std::size_t> local_time_hint_ = {};  // BreakTime() hint
-  mutable std::atomic<std::size_t> time_local_hint_ = {};  // MakeTime() hint
-};
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.cc
deleted file mode 100644
index 887dd097c650..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.cc
+++ /dev/null
@@ -1,315 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#if defined(_WIN32) || defined(_WIN64)
-#define _CRT_SECURE_NO_WARNINGS 1
-#endif
-
-#include "time_zone_libc.h"
-
-#include <chrono>
-#include <ctime>
-#include <limits>
-#include <utility>
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-#if defined(_AIX)
-extern "C" {
-extern long altzone;
-}
-#endif
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-#if defined(_WIN32) || defined(_WIN64)
-// Uses the globals: '_timezone', '_dstbias' and '_tzname'.
-auto tm_gmtoff(const std::tm& tm) -> decltype(_timezone + _dstbias) {
-  const bool is_dst = tm.tm_isdst > 0;
-  return _timezone + (is_dst ? _dstbias : 0);
-}
-auto tm_zone(const std::tm& tm) -> decltype(_tzname[0]) {
-  const bool is_dst = tm.tm_isdst > 0;
-  return _tzname[is_dst];
-}
-#elif defined(__sun) || defined(_AIX)
-// Uses the globals: 'timezone', 'altzone' and 'tzname'.
-auto tm_gmtoff(const std::tm& tm) -> decltype(timezone) {
-  const bool is_dst = tm.tm_isdst > 0;
-  return is_dst ? altzone : timezone;
-}
-auto tm_zone(const std::tm& tm) -> decltype(tzname[0]) {
-  const bool is_dst = tm.tm_isdst > 0;
-  return tzname[is_dst];
-}
-#elif defined(__native_client__) || defined(__myriad2__) || \
-    defined(__EMSCRIPTEN__)
-// Uses the globals: 'timezone' and 'tzname'.
-auto tm_gmtoff(const std::tm& tm) -> decltype(_timezone + 0) {
-  const bool is_dst = tm.tm_isdst > 0;
-  return _timezone + (is_dst ? 60 * 60 : 0);
-}
-auto tm_zone(const std::tm& tm) -> decltype(tzname[0]) {
-  const bool is_dst = tm.tm_isdst > 0;
-  return tzname[is_dst];
-}
-#else
-// Adapt to different spellings of the struct std::tm extension fields.
-#if defined(tm_gmtoff)
-auto tm_gmtoff(const std::tm& tm) -> decltype(tm.tm_gmtoff) {
-  return tm.tm_gmtoff;
-}
-#elif defined(__tm_gmtoff)
-auto tm_gmtoff(const std::tm& tm) -> decltype(tm.__tm_gmtoff) {
-  return tm.__tm_gmtoff;
-}
-#else
-template <typename T>
-auto tm_gmtoff(const T& tm) -> decltype(tm.tm_gmtoff) {
-  return tm.tm_gmtoff;
-}
-template <typename T>
-auto tm_gmtoff(const T& tm) -> decltype(tm.__tm_gmtoff) {
-  return tm.__tm_gmtoff;
-}
-#endif  // tm_gmtoff
-#if defined(tm_zone)
-auto tm_zone(const std::tm& tm) -> decltype(tm.tm_zone) { return tm.tm_zone; }
-#elif defined(__tm_zone)
-auto tm_zone(const std::tm& tm) -> decltype(tm.__tm_zone) {
-  return tm.__tm_zone;
-}
-#else
-template <typename T>
-auto tm_zone(const T& tm) -> decltype(tm.tm_zone) {
-  return tm.tm_zone;
-}
-template <typename T>
-auto tm_zone(const T& tm) -> decltype(tm.__tm_zone) {
-  return tm.__tm_zone;
-}
-#endif  // tm_zone
-#endif
-
-inline std::tm* gm_time(const std::time_t* timep, std::tm* result) {
-#if defined(_WIN32) || defined(_WIN64)
-  return gmtime_s(result, timep) ? nullptr : result;
-#else
-  return gmtime_r(timep, result);
-#endif
-}
-
-inline std::tm* local_time(const std::time_t* timep, std::tm* result) {
-#if defined(_WIN32) || defined(_WIN64)
-  return localtime_s(result, timep) ? nullptr : result;
-#else
-  return localtime_r(timep, result);
-#endif
-}
-
-// Converts a civil second and "dst" flag into a time_t and UTC offset.
-// Returns false if time_t cannot represent the requested civil second.
-// Caller must have already checked that cs.year() will fit into a tm_year.
-bool make_time(const civil_second& cs, int is_dst, std::time_t* t, int* off) {
-  std::tm tm;
-  tm.tm_year = static_cast<int>(cs.year() - year_t{1900});
-  tm.tm_mon = cs.month() - 1;
-  tm.tm_mday = cs.day();
-  tm.tm_hour = cs.hour();
-  tm.tm_min = cs.minute();
-  tm.tm_sec = cs.second();
-  tm.tm_isdst = is_dst;
-  *t = std::mktime(&tm);
-  if (*t == std::time_t{-1}) {
-    std::tm tm2;
-    const std::tm* tmp = local_time(t, &tm2);
-    if (tmp == nullptr || tmp->tm_year != tm.tm_year ||
-        tmp->tm_mon != tm.tm_mon || tmp->tm_mday != tm.tm_mday ||
-        tmp->tm_hour != tm.tm_hour || tmp->tm_min != tm.tm_min ||
-        tmp->tm_sec != tm.tm_sec) {
-      // A true error (not just one second before the epoch).
-      return false;
-    }
-  }
-  *off = static_cast<int>(tm_gmtoff(tm));
-  return true;
-}
-
-// Find the least time_t in [lo:hi] where local time matches offset, given:
-// (1) lo doesn't match, (2) hi does, and (3) there is only one transition.
-std::time_t find_trans(std::time_t lo, std::time_t hi, int offset) {
-  std::tm tm;
-  while (lo + 1 != hi) {
-    const std::time_t mid = lo + (hi - lo) / 2;
-    std::tm* tmp = local_time(&mid, &tm);
-    if (tmp != nullptr) {
-      if (tm_gmtoff(*tmp) == offset) {
-        hi = mid;
-      } else {
-        lo = mid;
-      }
-    } else {
-      // If std::tm cannot hold some result we resort to a linear search,
-      // ignoring all failed conversions.  Slow, but never really happens.
-      while (++lo != hi) {
-        tmp = local_time(&lo, &tm);
-        if (tmp != nullptr) {
-          if (tm_gmtoff(*tmp) == offset) break;
-        }
-      }
-      return lo;
-    }
-  }
-  return hi;
-}
-
-}  // namespace
-
-TimeZoneLibC::TimeZoneLibC(const std::string& name)
-    : local_(name == "localtime") {}
-
-time_zone::absolute_lookup TimeZoneLibC::BreakTime(
-    const time_point<seconds>& tp) const {
-  time_zone::absolute_lookup al;
-  al.offset = 0;
-  al.is_dst = false;
-  al.abbr = "-00";
-
-  const std::int_fast64_t s = ToUnixSeconds(tp);
-
-  // If std::time_t cannot hold the input we saturate the output.
-  if (s < std::numeric_limits<std::time_t>::min()) {
-    al.cs = civil_second::min();
-    return al;
-  }
-  if (s > std::numeric_limits<std::time_t>::max()) {
-    al.cs = civil_second::max();
-    return al;
-  }
-
-  const std::time_t t = static_cast<std::time_t>(s);
-  std::tm tm;
-  std::tm* tmp = local_ ? local_time(&t, &tm) : gm_time(&t, &tm);
-
-  // If std::tm cannot hold the result we saturate the output.
-  if (tmp == nullptr) {
-    al.cs = (s < 0) ? civil_second::min() : civil_second::max();
-    return al;
-  }
-
-  const year_t year = tmp->tm_year + year_t{1900};
-  al.cs = civil_second(year, tmp->tm_mon + 1, tmp->tm_mday, tmp->tm_hour,
-                       tmp->tm_min, tmp->tm_sec);
-  al.offset = static_cast<int>(tm_gmtoff(*tmp));
-  al.abbr = local_ ? tm_zone(*tmp) : "UTC";  // as expected by cctz
-  al.is_dst = tmp->tm_isdst > 0;
-  return al;
-}
-
-time_zone::civil_lookup TimeZoneLibC::MakeTime(const civil_second& cs) const {
-  if (!local_) {
-    // If time_point<seconds> cannot hold the result we saturate.
-    static const civil_second min_tp_cs =
-        civil_second() + ToUnixSeconds(time_point<seconds>::min());
-    static const civil_second max_tp_cs =
-        civil_second() + ToUnixSeconds(time_point<seconds>::max());
-    const time_point<seconds> tp = (cs < min_tp_cs) ? time_point<seconds>::min()
-                                   : (cs > max_tp_cs)
-                                       ? time_point<seconds>::max()
-                                       : FromUnixSeconds(cs - civil_second());
-    return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
-  }
-
-  // If tm_year cannot hold the requested year we saturate the result.
-  if (cs.year() < 0) {
-    if (cs.year() < std::numeric_limits<int>::min() + year_t{1900}) {
-      const time_point<seconds> tp = time_point<seconds>::min();
-      return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
-    }
-  } else {
-    if (cs.year() - year_t{1900} > std::numeric_limits<int>::max()) {
-      const time_point<seconds> tp = time_point<seconds>::max();
-      return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
-    }
-  }
-
-  // We probe with "is_dst" values of 0 and 1 to try to distinguish unique
-  // civil seconds from skipped or repeated ones.  This is not always possible
-  // however, as the "dst" flag does not change over some offset transitions.
-  // We are also subject to the vagaries of mktime() implementations.
-  std::time_t t0, t1;
-  int offset0, offset1;
-  if (make_time(cs, 0, &t0, &offset0) && make_time(cs, 1, &t1, &offset1)) {
-    if (t0 == t1) {
-      // The civil time was singular (pre == trans == post).
-      const time_point<seconds> tp = FromUnixSeconds(t0);
-      return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
-    }
-
-    if (t0 > t1) {
-      std::swap(t0, t1);
-      std::swap(offset0, offset1);
-    }
-    const std::time_t tt = find_trans(t0, t1, offset1);
-    const time_point<seconds> trans = FromUnixSeconds(tt);
-
-    if (offset0 < offset1) {
-      // The civil time did not exist (pre >= trans > post).
-      const time_point<seconds> pre = FromUnixSeconds(t1);
-      const time_point<seconds> post = FromUnixSeconds(t0);
-      return {time_zone::civil_lookup::SKIPPED, pre, trans, post};
-    }
-
-    // The civil time was ambiguous (pre < trans <= post).
-    const time_point<seconds> pre = FromUnixSeconds(t0);
-    const time_point<seconds> post = FromUnixSeconds(t1);
-    return {time_zone::civil_lookup::REPEATED, pre, trans, post};
-  }
-
-  // make_time() failed somehow so we saturate the result.
-  const time_point<seconds> tp = (cs < civil_second())
-                                     ? time_point<seconds>::min()
-                                     : time_point<seconds>::max();
-  return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
-}
-
-bool TimeZoneLibC::NextTransition(const time_point<seconds>&,
-                                  time_zone::civil_transition*) const {
-  return false;
-}
-
-bool TimeZoneLibC::PrevTransition(const time_point<seconds>&,
-                                  time_zone::civil_transition*) const {
-  return false;
-}
-
-std::string TimeZoneLibC::Version() const {
-  return std::string();  // unknown
-}
-
-std::string TimeZoneLibC::Description() const {
-  return local_ ? "localtime" : "UTC";
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.h
deleted file mode 100644
index 1da9039a15ee..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_libc.h
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
-
-#include <string>
-
-#include "absl/base/config.h"
-#include "time_zone_if.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// A time zone backed by gmtime_r(3), localtime_r(3), and mktime(3),
-// and which therefore only supports UTC and the local time zone.
-// TODO: Add support for fixed offsets from UTC.
-class TimeZoneLibC : public TimeZoneIf {
- public:
-  explicit TimeZoneLibC(const std::string& name);
-
-  // TimeZoneIf implementations.
-  time_zone::absolute_lookup BreakTime(
-      const time_point<seconds>& tp) const override;
-  time_zone::civil_lookup MakeTime(const civil_second& cs) const override;
-  bool NextTransition(const time_point<seconds>& tp,
-                      time_zone::civil_transition* trans) const override;
-  bool PrevTransition(const time_point<seconds>& tp,
-                      time_zone::civil_transition* trans) const override;
-  std::string Version() const override;
-  std::string Description() const override;
-
- private:
-  const bool local_;  // localtime or UTC
-};
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup.cc
deleted file mode 100644
index efdea64b4eb1..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup.cc
+++ /dev/null
@@ -1,187 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-#if defined(__ANDROID__)
-#include <sys/system_properties.h>
-#if defined(__ANDROID_API__) && __ANDROID_API__ >= 21
-#include <dlfcn.h>
-#endif
-#endif
-
-#if defined(__APPLE__)
-#include <CoreFoundation/CFTimeZone.h>
-
-#include <vector>
-#endif
-
-#include <cstdlib>
-#include <cstring>
-#include <string>
-
-#include "time_zone_fixed.h"
-#include "time_zone_impl.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-#if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ >= 21
-namespace {
-// Android 'L' removes __system_property_get() from the NDK, however
-// it is still a hidden symbol in libc so we use dlsym() to access it.
-// See Chromium's base/sys_info_android.cc for a similar example.
-
-using property_get_func = int (*)(const char*, char*);
-
-property_get_func LoadSystemPropertyGet() {
-  int flag = RTLD_LAZY | RTLD_GLOBAL;
-#if defined(RTLD_NOLOAD)
-  flag |= RTLD_NOLOAD;  // libc.so should already be resident
-#endif
-  if (void* handle = dlopen("libc.so", flag)) {
-    void* sym = dlsym(handle, "__system_property_get");
-    dlclose(handle);
-    return reinterpret_cast<property_get_func>(sym);
-  }
-  return nullptr;
-}
-
-int __system_property_get(const char* name, char* value) {
-  static property_get_func system_property_get = LoadSystemPropertyGet();
-  return system_property_get ? system_property_get(name, value) : -1;
-}
-
-}  // namespace
-#endif
-
-std::string time_zone::name() const { return effective_impl().Name(); }
-
-time_zone::absolute_lookup time_zone::lookup(
-    const time_point<seconds>& tp) const {
-  return effective_impl().BreakTime(tp);
-}
-
-time_zone::civil_lookup time_zone::lookup(const civil_second& cs) const {
-  return effective_impl().MakeTime(cs);
-}
-
-bool time_zone::next_transition(const time_point<seconds>& tp,
-                                civil_transition* trans) const {
-  return effective_impl().NextTransition(tp, trans);
-}
-
-bool time_zone::prev_transition(const time_point<seconds>& tp,
-                                civil_transition* trans) const {
-  return effective_impl().PrevTransition(tp, trans);
-}
-
-std::string time_zone::version() const { return effective_impl().Version(); }
-
-std::string time_zone::description() const {
-  return effective_impl().Description();
-}
-
-const time_zone::Impl& time_zone::effective_impl() const {
-  if (impl_ == nullptr) {
-    // Dereferencing an implicit-UTC time_zone is expected to be
-    // rare, so we don't mind paying a small synchronization cost.
-    return *time_zone::Impl::UTC().impl_;
-  }
-  return *impl_;
-}
-
-bool load_time_zone(const std::string& name, time_zone* tz) {
-  return time_zone::Impl::LoadTimeZone(name, tz);
-}
-
-time_zone utc_time_zone() {
-  return time_zone::Impl::UTC();  // avoid name lookup
-}
-
-time_zone fixed_time_zone(const seconds& offset) {
-  time_zone tz;
-  load_time_zone(FixedOffsetToName(offset), &tz);
-  return tz;
-}
-
-time_zone local_time_zone() {
-  const char* zone = ":localtime";
-#if defined(__ANDROID__)
-  char sysprop[PROP_VALUE_MAX];
-  if (__system_property_get("persist.sys.timezone", sysprop) > 0) {
-    zone = sysprop;
-  }
-#endif
-#if defined(__APPLE__)
-  std::vector<char> buffer;
-  CFTimeZoneRef tz_default = CFTimeZoneCopyDefault();
-  if (CFStringRef tz_name = CFTimeZoneGetName(tz_default)) {
-    CFStringEncoding encoding = kCFStringEncodingUTF8;
-    CFIndex length = CFStringGetLength(tz_name);
-    buffer.resize(CFStringGetMaximumSizeForEncoding(length, encoding) + 1);
-    if (CFStringGetCString(tz_name, &buffer[0], buffer.size(), encoding)) {
-      zone = &buffer[0];
-    }
-  }
-  CFRelease(tz_default);
-#endif
-
-  // Allow ${TZ} to override to default zone.
-  char* tz_env = nullptr;
-#if defined(_MSC_VER)
-  _dupenv_s(&tz_env, nullptr, "TZ");
-#else
-  tz_env = std::getenv("TZ");
-#endif
-  if (tz_env) zone = tz_env;
-
-  // We only support the "[:]<zone-name>" form.
-  if (*zone == ':') ++zone;
-
-  // Map "localtime" to a system-specific name, but
-  // allow ${LOCALTIME} to override the default name.
-  char* localtime_env = nullptr;
-  if (strcmp(zone, "localtime") == 0) {
-#if defined(_MSC_VER)
-    // System-specific default is just "localtime".
-    _dupenv_s(&localtime_env, nullptr, "LOCALTIME");
-#else
-    zone = "/etc/localtime";  // System-specific default.
-    localtime_env = std::getenv("LOCALTIME");
-#endif
-    if (localtime_env) zone = localtime_env;
-  }
-
-  const std::string name = zone;
-#if defined(_MSC_VER)
-  free(localtime_env);
-  free(tz_env);
-#endif
-
-  time_zone tz;
-  load_time_zone(name, &tz);  // Falls back to UTC.
-  // TODO: Follow the RFC3339 "Unknown Local Offset Convention" and
-  // arrange for %z to generate "-0000" when we don't know the local
-  // offset because the load_time_zone() failed and we're using UTC.
-  return tz;
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup_test.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup_test.cc
deleted file mode 100644
index 9a1a8d6e400c..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_lookup_test.cc
+++ /dev/null
@@ -1,1442 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include <chrono>
-#include <cstddef>
-#include <cstdlib>
-#include <future>
-#include <limits>
-#include <string>
-#include <thread>
-#include <vector>
-
-#include "gtest/gtest.h"
-#include "absl/base/config.h"
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
-namespace chrono = std::chrono;
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-// A list of known time-zone names.
-const char* const kTimeZoneNames[] = {"Africa/Abidjan",
-                                      "Africa/Accra",
-                                      "Africa/Addis_Ababa",
-                                      "Africa/Algiers",
-                                      "Africa/Asmara",
-                                      "Africa/Asmera",
-                                      "Africa/Bamako",
-                                      "Africa/Bangui",
-                                      "Africa/Banjul",
-                                      "Africa/Bissau",
-                                      "Africa/Blantyre",
-                                      "Africa/Brazzaville",
-                                      "Africa/Bujumbura",
-                                      "Africa/Cairo",
-                                      "Africa/Casablanca",
-                                      "Africa/Ceuta",
-                                      "Africa/Conakry",
-                                      "Africa/Dakar",
-                                      "Africa/Dar_es_Salaam",
-                                      "Africa/Djibouti",
-                                      "Africa/Douala",
-                                      "Africa/El_Aaiun",
-                                      "Africa/Freetown",
-                                      "Africa/Gaborone",
-                                      "Africa/Harare",
-                                      "Africa/Johannesburg",
-                                      "Africa/Juba",
-                                      "Africa/Kampala",
-                                      "Africa/Khartoum",
-                                      "Africa/Kigali",
-                                      "Africa/Kinshasa",
-                                      "Africa/Lagos",
-                                      "Africa/Libreville",
-                                      "Africa/Lome",
-                                      "Africa/Luanda",
-                                      "Africa/Lubumbashi",
-                                      "Africa/Lusaka",
-                                      "Africa/Malabo",
-                                      "Africa/Maputo",
-                                      "Africa/Maseru",
-                                      "Africa/Mbabane",
-                                      "Africa/Mogadishu",
-                                      "Africa/Monrovia",
-                                      "Africa/Nairobi",
-                                      "Africa/Ndjamena",
-                                      "Africa/Niamey",
-                                      "Africa/Nouakchott",
-                                      "Africa/Ouagadougou",
-                                      "Africa/Porto-Novo",
-                                      "Africa/Sao_Tome",
-                                      "Africa/Timbuktu",
-                                      "Africa/Tripoli",
-                                      "Africa/Tunis",
-                                      "Africa/Windhoek",
-                                      "America/Adak",
-                                      "America/Anchorage",
-                                      "America/Anguilla",
-                                      "America/Antigua",
-                                      "America/Araguaina",
-                                      "America/Argentina/Buenos_Aires",
-                                      "America/Argentina/Catamarca",
-                                      "America/Argentina/ComodRivadavia",
-                                      "America/Argentina/Cordoba",
-                                      "America/Argentina/Jujuy",
-                                      "America/Argentina/La_Rioja",
-                                      "America/Argentina/Mendoza",
-                                      "America/Argentina/Rio_Gallegos",
-                                      "America/Argentina/Salta",
-                                      "America/Argentina/San_Juan",
-                                      "America/Argentina/San_Luis",
-                                      "America/Argentina/Tucuman",
-                                      "America/Argentina/Ushuaia",
-                                      "America/Aruba",
-                                      "America/Asuncion",
-                                      "America/Atikokan",
-                                      "America/Atka",
-                                      "America/Bahia",
-                                      "America/Bahia_Banderas",
-                                      "America/Barbados",
-                                      "America/Belem",
-                                      "America/Belize",
-                                      "America/Blanc-Sablon",
-                                      "America/Boa_Vista",
-                                      "America/Bogota",
-                                      "America/Boise",
-                                      "America/Buenos_Aires",
-                                      "America/Cambridge_Bay",
-                                      "America/Campo_Grande",
-                                      "America/Cancun",
-                                      "America/Caracas",
-                                      "America/Catamarca",
-                                      "America/Cayenne",
-                                      "America/Cayman",
-                                      "America/Chicago",
-                                      "America/Chihuahua",
-                                      "America/Coral_Harbour",
-                                      "America/Cordoba",
-                                      "America/Costa_Rica",
-                                      "America/Creston",
-                                      "America/Cuiaba",
-                                      "America/Curacao",
-                                      "America/Danmarkshavn",
-                                      "America/Dawson",
-                                      "America/Dawson_Creek",
-                                      "America/Denver",
-                                      "America/Detroit",
-                                      "America/Dominica",
-                                      "America/Edmonton",
-                                      "America/Eirunepe",
-                                      "America/El_Salvador",
-                                      "America/Ensenada",
-                                      "America/Fort_Nelson",
-                                      "America/Fort_Wayne",
-                                      "America/Fortaleza",
-                                      "America/Glace_Bay",
-                                      "America/Godthab",
-                                      "America/Goose_Bay",
-                                      "America/Grand_Turk",
-                                      "America/Grenada",
-                                      "America/Guadeloupe",
-                                      "America/Guatemala",
-                                      "America/Guayaquil",
-                                      "America/Guyana",
-                                      "America/Halifax",
-                                      "America/Havana",
-                                      "America/Hermosillo",
-                                      "America/Indiana/Indianapolis",
-                                      "America/Indiana/Knox",
-                                      "America/Indiana/Marengo",
-                                      "America/Indiana/Petersburg",
-                                      "America/Indiana/Tell_City",
-                                      "America/Indiana/Vevay",
-                                      "America/Indiana/Vincennes",
-                                      "America/Indiana/Winamac",
-                                      "America/Indianapolis",
-                                      "America/Inuvik",
-                                      "America/Iqaluit",
-                                      "America/Jamaica",
-                                      "America/Jujuy",
-                                      "America/Juneau",
-                                      "America/Kentucky/Louisville",
-                                      "America/Kentucky/Monticello",
-                                      "America/Knox_IN",
-                                      "America/Kralendijk",
-                                      "America/La_Paz",
-                                      "America/Lima",
-                                      "America/Los_Angeles",
-                                      "America/Louisville",
-                                      "America/Lower_Princes",
-                                      "America/Maceio",
-                                      "America/Managua",
-                                      "America/Manaus",
-                                      "America/Marigot",
-                                      "America/Martinique",
-                                      "America/Matamoros",
-                                      "America/Mazatlan",
-                                      "America/Mendoza",
-                                      "America/Menominee",
-                                      "America/Merida",
-                                      "America/Metlakatla",
-                                      "America/Mexico_City",
-                                      "America/Miquelon",
-                                      "America/Moncton",
-                                      "America/Monterrey",
-                                      "America/Montevideo",
-                                      "America/Montreal",
-                                      "America/Montserrat",
-                                      "America/Nassau",
-                                      "America/New_York",
-                                      "America/Nipigon",
-                                      "America/Nome",
-                                      "America/Noronha",
-                                      "America/North_Dakota/Beulah",
-                                      "America/North_Dakota/Center",
-                                      "America/North_Dakota/New_Salem",
-                                      "America/Nuuk",
-                                      "America/Ojinaga",
-                                      "America/Panama",
-                                      "America/Pangnirtung",
-                                      "America/Paramaribo",
-                                      "America/Phoenix",
-                                      "America/Port-au-Prince",
-                                      "America/Port_of_Spain",
-                                      "America/Porto_Acre",
-                                      "America/Porto_Velho",
-                                      "America/Puerto_Rico",
-                                      "America/Punta_Arenas",
-                                      "America/Rainy_River",
-                                      "America/Rankin_Inlet",
-                                      "America/Recife",
-                                      "America/Regina",
-                                      "America/Resolute",
-                                      "America/Rio_Branco",
-                                      "America/Rosario",
-                                      "America/Santa_Isabel",
-                                      "America/Santarem",
-                                      "America/Santiago",
-                                      "America/Santo_Domingo",
-                                      "America/Sao_Paulo",
-                                      "America/Scoresbysund",
-                                      "America/Shiprock",
-                                      "America/Sitka",
-                                      "America/St_Barthelemy",
-                                      "America/St_Johns",
-                                      "America/St_Kitts",
-                                      "America/St_Lucia",
-                                      "America/St_Thomas",
-                                      "America/St_Vincent",
-                                      "America/Swift_Current",
-                                      "America/Tegucigalpa",
-                                      "America/Thule",
-                                      "America/Thunder_Bay",
-                                      "America/Tijuana",
-                                      "America/Toronto",
-                                      "America/Tortola",
-                                      "America/Vancouver",
-                                      "America/Virgin",
-                                      "America/Whitehorse",
-                                      "America/Winnipeg",
-                                      "America/Yakutat",
-                                      "America/Yellowknife",
-                                      "Antarctica/Casey",
-                                      "Antarctica/Davis",
-                                      "Antarctica/DumontDUrville",
-                                      "Antarctica/Macquarie",
-                                      "Antarctica/Mawson",
-                                      "Antarctica/McMurdo",
-                                      "Antarctica/Palmer",
-                                      "Antarctica/Rothera",
-                                      "Antarctica/South_Pole",
-                                      "Antarctica/Syowa",
-                                      "Antarctica/Troll",
-                                      "Antarctica/Vostok",
-                                      "Arctic/Longyearbyen",
-                                      "Asia/Aden",
-                                      "Asia/Almaty",
-                                      "Asia/Amman",
-                                      "Asia/Anadyr",
-                                      "Asia/Aqtau",
-                                      "Asia/Aqtobe",
-                                      "Asia/Ashgabat",
-                                      "Asia/Ashkhabad",
-                                      "Asia/Atyrau",
-                                      "Asia/Baghdad",
-                                      "Asia/Bahrain",
-                                      "Asia/Baku",
-                                      "Asia/Bangkok",
-                                      "Asia/Barnaul",
-                                      "Asia/Beirut",
-                                      "Asia/Bishkek",
-                                      "Asia/Brunei",
-                                      "Asia/Calcutta",
-                                      "Asia/Chita",
-                                      "Asia/Choibalsan",
-                                      "Asia/Chongqing",
-                                      "Asia/Chungking",
-                                      "Asia/Colombo",
-                                      "Asia/Dacca",
-                                      "Asia/Damascus",
-                                      "Asia/Dhaka",
-                                      "Asia/Dili",
-                                      "Asia/Dubai",
-                                      "Asia/Dushanbe",
-                                      "Asia/Famagusta",
-                                      "Asia/Gaza",
-                                      "Asia/Harbin",
-                                      "Asia/Hebron",
-                                      "Asia/Ho_Chi_Minh",
-                                      "Asia/Hong_Kong",
-                                      "Asia/Hovd",
-                                      "Asia/Irkutsk",
-                                      "Asia/Istanbul",
-                                      "Asia/Jakarta",
-                                      "Asia/Jayapura",
-                                      "Asia/Jerusalem",
-                                      "Asia/Kabul",
-                                      "Asia/Kamchatka",
-                                      "Asia/Karachi",
-                                      "Asia/Kashgar",
-                                      "Asia/Kathmandu",
-                                      "Asia/Katmandu",
-                                      "Asia/Khandyga",
-                                      "Asia/Kolkata",
-                                      "Asia/Krasnoyarsk",
-                                      "Asia/Kuala_Lumpur",
-                                      "Asia/Kuching",
-                                      "Asia/Kuwait",
-                                      "Asia/Macao",
-                                      "Asia/Macau",
-                                      "Asia/Magadan",
-                                      "Asia/Makassar",
-                                      "Asia/Manila",
-                                      "Asia/Muscat",
-                                      "Asia/Nicosia",
-                                      "Asia/Novokuznetsk",
-                                      "Asia/Novosibirsk",
-                                      "Asia/Omsk",
-                                      "Asia/Oral",
-                                      "Asia/Phnom_Penh",
-                                      "Asia/Pontianak",
-                                      "Asia/Pyongyang",
-                                      "Asia/Qatar",
-                                      "Asia/Qostanay",
-                                      "Asia/Qyzylorda",
-                                      "Asia/Rangoon",
-                                      "Asia/Riyadh",
-                                      "Asia/Saigon",
-                                      "Asia/Sakhalin",
-                                      "Asia/Samarkand",
-                                      "Asia/Seoul",
-                                      "Asia/Shanghai",
-                                      "Asia/Singapore",
-                                      "Asia/Srednekolymsk",
-                                      "Asia/Taipei",
-                                      "Asia/Tashkent",
-                                      "Asia/Tbilisi",
-                                      "Asia/Tehran",
-                                      "Asia/Tel_Aviv",
-                                      "Asia/Thimbu",
-                                      "Asia/Thimphu",
-                                      "Asia/Tokyo",
-                                      "Asia/Tomsk",
-                                      "Asia/Ujung_Pandang",
-                                      "Asia/Ulaanbaatar",
-                                      "Asia/Ulan_Bator",
-                                      "Asia/Urumqi",
-                                      "Asia/Ust-Nera",
-                                      "Asia/Vientiane",
-                                      "Asia/Vladivostok",
-                                      "Asia/Yakutsk",
-                                      "Asia/Yangon",
-                                      "Asia/Yekaterinburg",
-                                      "Asia/Yerevan",
-                                      "Atlantic/Azores",
-                                      "Atlantic/Bermuda",
-                                      "Atlantic/Canary",
-                                      "Atlantic/Cape_Verde",
-                                      "Atlantic/Faeroe",
-                                      "Atlantic/Faroe",
-                                      "Atlantic/Jan_Mayen",
-                                      "Atlantic/Madeira",
-                                      "Atlantic/Reykjavik",
-                                      "Atlantic/South_Georgia",
-                                      "Atlantic/St_Helena",
-                                      "Atlantic/Stanley",
-                                      "Australia/ACT",
-                                      "Australia/Adelaide",
-                                      "Australia/Brisbane",
-                                      "Australia/Broken_Hill",
-                                      "Australia/Canberra",
-                                      "Australia/Currie",
-                                      "Australia/Darwin",
-                                      "Australia/Eucla",
-                                      "Australia/Hobart",
-                                      "Australia/LHI",
-                                      "Australia/Lindeman",
-                                      "Australia/Lord_Howe",
-                                      "Australia/Melbourne",
-                                      "Australia/NSW",
-                                      "Australia/North",
-                                      "Australia/Perth",
-                                      "Australia/Queensland",
-                                      "Australia/South",
-                                      "Australia/Sydney",
-                                      "Australia/Tasmania",
-                                      "Australia/Victoria",
-                                      "Australia/West",
-                                      "Australia/Yancowinna",
-                                      "Brazil/Acre",
-                                      "Brazil/DeNoronha",
-                                      "Brazil/East",
-                                      "Brazil/West",
-                                      "CET",
-                                      "CST6CDT",
-                                      "Canada/Atlantic",
-                                      "Canada/Central",
-                                      "Canada/Eastern",
-                                      "Canada/Mountain",
-                                      "Canada/Newfoundland",
-                                      "Canada/Pacific",
-                                      "Canada/Saskatchewan",
-                                      "Canada/Yukon",
-                                      "Chile/Continental",
-                                      "Chile/EasterIsland",
-                                      "Cuba",
-                                      "EET",
-                                      "EST",
-                                      "EST5EDT",
-                                      "Egypt",
-                                      "Eire",
-                                      "Etc/GMT",
-                                      "Etc/GMT+0",
-                                      "Etc/GMT+1",
-                                      "Etc/GMT+10",
-                                      "Etc/GMT+11",
-                                      "Etc/GMT+12",
-                                      "Etc/GMT+2",
-                                      "Etc/GMT+3",
-                                      "Etc/GMT+4",
-                                      "Etc/GMT+5",
-                                      "Etc/GMT+6",
-                                      "Etc/GMT+7",
-                                      "Etc/GMT+8",
-                                      "Etc/GMT+9",
-                                      "Etc/GMT-0",
-                                      "Etc/GMT-1",
-                                      "Etc/GMT-10",
-                                      "Etc/GMT-11",
-                                      "Etc/GMT-12",
-                                      "Etc/GMT-13",
-                                      "Etc/GMT-14",
-                                      "Etc/GMT-2",
-                                      "Etc/GMT-3",
-                                      "Etc/GMT-4",
-                                      "Etc/GMT-5",
-                                      "Etc/GMT-6",
-                                      "Etc/GMT-7",
-                                      "Etc/GMT-8",
-                                      "Etc/GMT-9",
-                                      "Etc/GMT0",
-                                      "Etc/Greenwich",
-                                      "Etc/UCT",
-                                      "Etc/UTC",
-                                      "Etc/Universal",
-                                      "Etc/Zulu",
-                                      "Europe/Amsterdam",
-                                      "Europe/Andorra",
-                                      "Europe/Astrakhan",
-                                      "Europe/Athens",
-                                      "Europe/Belfast",
-                                      "Europe/Belgrade",
-                                      "Europe/Berlin",
-                                      "Europe/Bratislava",
-                                      "Europe/Brussels",
-                                      "Europe/Bucharest",
-                                      "Europe/Budapest",
-                                      "Europe/Busingen",
-                                      "Europe/Chisinau",
-                                      "Europe/Copenhagen",
-                                      "Europe/Dublin",
-                                      "Europe/Gibraltar",
-                                      "Europe/Guernsey",
-                                      "Europe/Helsinki",
-                                      "Europe/Isle_of_Man",
-                                      "Europe/Istanbul",
-                                      "Europe/Jersey",
-                                      "Europe/Kaliningrad",
-                                      "Europe/Kiev",
-                                      "Europe/Kirov",
-                                      "Europe/Lisbon",
-                                      "Europe/Ljubljana",
-                                      "Europe/London",
-                                      "Europe/Luxembourg",
-                                      "Europe/Madrid",
-                                      "Europe/Malta",
-                                      "Europe/Mariehamn",
-                                      "Europe/Minsk",
-                                      "Europe/Monaco",
-                                      "Europe/Moscow",
-                                      "Europe/Nicosia",
-                                      "Europe/Oslo",
-                                      "Europe/Paris",
-                                      "Europe/Podgorica",
-                                      "Europe/Prague",
-                                      "Europe/Riga",
-                                      "Europe/Rome",
-                                      "Europe/Samara",
-                                      "Europe/San_Marino",
-                                      "Europe/Sarajevo",
-                                      "Europe/Saratov",
-                                      "Europe/Simferopol",
-                                      "Europe/Skopje",
-                                      "Europe/Sofia",
-                                      "Europe/Stockholm",
-                                      "Europe/Tallinn",
-                                      "Europe/Tirane",
-                                      "Europe/Tiraspol",
-                                      "Europe/Ulyanovsk",
-                                      "Europe/Uzhgorod",
-                                      "Europe/Vaduz",
-                                      "Europe/Vatican",
-                                      "Europe/Vienna",
-                                      "Europe/Vilnius",
-                                      "Europe/Volgograd",
-                                      "Europe/Warsaw",
-                                      "Europe/Zagreb",
-                                      "Europe/Zaporozhye",
-                                      "Europe/Zurich",
-                                      "GB",
-                                      "GB-Eire",
-                                      "GMT",
-                                      "GMT+0",
-                                      "GMT-0",
-                                      "GMT0",
-                                      "Greenwich",
-                                      "HST",
-                                      "Hongkong",
-                                      "Iceland",
-                                      "Indian/Antananarivo",
-                                      "Indian/Chagos",
-                                      "Indian/Christmas",
-                                      "Indian/Cocos",
-                                      "Indian/Comoro",
-                                      "Indian/Kerguelen",
-                                      "Indian/Mahe",
-                                      "Indian/Maldives",
-                                      "Indian/Mauritius",
-                                      "Indian/Mayotte",
-                                      "Indian/Reunion",
-                                      "Iran",
-                                      "Israel",
-                                      "Jamaica",
-                                      "Japan",
-                                      "Kwajalein",
-                                      "Libya",
-                                      "MET",
-                                      "MST",
-                                      "MST7MDT",
-                                      "Mexico/BajaNorte",
-                                      "Mexico/BajaSur",
-                                      "Mexico/General",
-                                      "NZ",
-                                      "NZ-CHAT",
-                                      "Navajo",
-                                      "PRC",
-                                      "PST8PDT",
-                                      "Pacific/Apia",
-                                      "Pacific/Auckland",
-                                      "Pacific/Bougainville",
-                                      "Pacific/Chatham",
-                                      "Pacific/Chuuk",
-                                      "Pacific/Easter",
-                                      "Pacific/Efate",
-                                      "Pacific/Enderbury",
-                                      "Pacific/Fakaofo",
-                                      "Pacific/Fiji",
-                                      "Pacific/Funafuti",
-                                      "Pacific/Galapagos",
-                                      "Pacific/Gambier",
-                                      "Pacific/Guadalcanal",
-                                      "Pacific/Guam",
-                                      "Pacific/Honolulu",
-                                      "Pacific/Johnston",
-                                      "Pacific/Kiritimati",
-                                      "Pacific/Kosrae",
-                                      "Pacific/Kwajalein",
-                                      "Pacific/Majuro",
-                                      "Pacific/Marquesas",
-                                      "Pacific/Midway",
-                                      "Pacific/Nauru",
-                                      "Pacific/Niue",
-                                      "Pacific/Norfolk",
-                                      "Pacific/Noumea",
-                                      "Pacific/Pago_Pago",
-                                      "Pacific/Palau",
-                                      "Pacific/Pitcairn",
-                                      "Pacific/Pohnpei",
-                                      "Pacific/Ponape",
-                                      "Pacific/Port_Moresby",
-                                      "Pacific/Rarotonga",
-                                      "Pacific/Saipan",
-                                      "Pacific/Samoa",
-                                      "Pacific/Tahiti",
-                                      "Pacific/Tarawa",
-                                      "Pacific/Tongatapu",
-                                      "Pacific/Truk",
-                                      "Pacific/Wake",
-                                      "Pacific/Wallis",
-                                      "Pacific/Yap",
-                                      "Poland",
-                                      "Portugal",
-                                      "ROC",
-                                      "ROK",
-                                      "Singapore",
-                                      "Turkey",
-                                      "UCT",
-                                      "US/Alaska",
-                                      "US/Aleutian",
-                                      "US/Arizona",
-                                      "US/Central",
-                                      "US/East-Indiana",
-                                      "US/Eastern",
-                                      "US/Hawaii",
-                                      "US/Indiana-Starke",
-                                      "US/Michigan",
-                                      "US/Mountain",
-                                      "US/Pacific",
-                                      "US/Samoa",
-                                      "UTC",
-                                      "Universal",
-                                      "W-SU",
-                                      "WET",
-                                      "Zulu",
-                                      nullptr};
-
-// Helper to return a loaded time zone by value (UTC on error).
-time_zone LoadZone(const std::string& name) {
-  time_zone tz;
-  load_time_zone(name, &tz);
-  return tz;
-}
-
-// This helper is a macro so that failed expectations show up with the
-// correct line numbers.
-#define ExpectTime(tp, tz, y, m, d, hh, mm, ss, off, isdst, zone) \
-  do {                                                            \
-    time_zone::absolute_lookup al = tz.lookup(tp);                \
-    EXPECT_EQ(y, al.cs.year());                                   \
-    EXPECT_EQ(m, al.cs.month());                                  \
-    EXPECT_EQ(d, al.cs.day());                                    \
-    EXPECT_EQ(hh, al.cs.hour());                                  \
-    EXPECT_EQ(mm, al.cs.minute());                                \
-    EXPECT_EQ(ss, al.cs.second());                                \
-    EXPECT_EQ(off, al.offset);                                    \
-    EXPECT_TRUE(isdst == al.is_dst);                              \
-    /* EXPECT_STREQ(zone, al.abbr); */                            \
-  } while (0)
-
-// These tests sometimes run on platforms that have zoneinfo data so old
-// that the transition we are attempting to check does not exist, most
-// notably Android emulators.  Fortunately, AndroidZoneInfoSource supports
-// time_zone::version() so, in cases where we've learned that it matters,
-// we can make the check conditionally.
-int VersionCmp(time_zone tz, const std::string& target) {
-  std::string version = tz.version();
-  if (version.empty() && !target.empty()) return 1;  // unknown > known
-  return version.compare(target);
-}
-
-}  // namespace
-
-#if !defined(__EMSCRIPTEN__)
-TEST(TimeZones, LoadZonesConcurrently) {
-  std::promise<void> ready_promise;
-  std::shared_future<void> ready_future(ready_promise.get_future());
-  auto load_zones = [ready_future](std::promise<void>* started,
-                                   std::set<std::string>* failures) {
-    started->set_value();
-    ready_future.wait();
-    for (const char* const* np = kTimeZoneNames; *np != nullptr; ++np) {
-      std::string zone = *np;
-      time_zone tz;
-      if (load_time_zone(zone, &tz)) {
-        EXPECT_EQ(zone, tz.name());
-      } else {
-        failures->insert(zone);
-      }
-    }
-  };
-
-  const std::size_t n_threads = 128;
-  std::vector<std::thread> threads;
-  std::vector<std::set<std::string>> thread_failures(n_threads);
-  for (std::size_t i = 0; i != n_threads; ++i) {
-    std::promise<void> started;
-    threads.emplace_back(load_zones, &started, &thread_failures[i]);
-    started.get_future().wait();
-  }
-  ready_promise.set_value();
-  for (auto& thread : threads) {
-    thread.join();
-  }
-
-  // Allow a small number of failures to account for skew between
-  // the contents of kTimeZoneNames and the zoneinfo data source.
-#if defined(__ANDROID__)
-  // Cater to the possibility of using an even older zoneinfo data
-  // source when running on Android, where it is difficult to override
-  // the bionic tzdata provided by the test environment.
-  const std::size_t max_failures = 20;
-#else
-  const std::size_t max_failures = 3;
-#endif
-  std::set<std::string> failures;
-  for (const auto& thread_failure : thread_failures) {
-    failures.insert(thread_failure.begin(), thread_failure.end());
-  }
-  EXPECT_LE(failures.size(), max_failures) << testing::PrintToString(failures);
-}
-#endif
-
-TEST(TimeZone, NamedTimeZones) {
-  const time_zone utc = utc_time_zone();
-  EXPECT_EQ("UTC", utc.name());
-  const time_zone nyc = LoadZone("America/New_York");
-  EXPECT_EQ("America/New_York", nyc.name());
-  const time_zone syd = LoadZone("Australia/Sydney");
-  EXPECT_EQ("Australia/Sydney", syd.name());
-  const time_zone fixed0 =
-      fixed_time_zone(absl::time_internal::cctz::seconds::zero());
-  EXPECT_EQ("UTC", fixed0.name());
-  const time_zone fixed_pos = fixed_time_zone(
-      chrono::hours(3) + chrono::minutes(25) + chrono::seconds(45));
-  EXPECT_EQ("Fixed/UTC+03:25:45", fixed_pos.name());
-  const time_zone fixed_neg = fixed_time_zone(
-      -(chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56)));
-  EXPECT_EQ("Fixed/UTC-12:34:56", fixed_neg.name());
-}
-
-TEST(TimeZone, Failures) {
-  time_zone tz;
-  EXPECT_FALSE(load_time_zone(":America/Los_Angeles", &tz));
-
-  tz = LoadZone("America/Los_Angeles");
-  EXPECT_FALSE(load_time_zone("Invalid/TimeZone", &tz));
-  EXPECT_EQ(chrono::system_clock::from_time_t(0),
-            convert(civil_second(1970, 1, 1, 0, 0, 0), tz));  // UTC
-
-  // Ensures that the load still fails on a subsequent attempt.
-  tz = LoadZone("America/Los_Angeles");
-  EXPECT_FALSE(load_time_zone("Invalid/TimeZone", &tz));
-  EXPECT_EQ(chrono::system_clock::from_time_t(0),
-            convert(civil_second(1970, 1, 1, 0, 0, 0), tz));  // UTC
-
-  // Loading an empty string timezone should fail.
-  tz = LoadZone("America/Los_Angeles");
-  EXPECT_FALSE(load_time_zone("", &tz));
-  EXPECT_EQ(chrono::system_clock::from_time_t(0),
-            convert(civil_second(1970, 1, 1, 0, 0, 0), tz));  // UTC
-}
-
-TEST(TimeZone, Equality) {
-  const time_zone a;
-  const time_zone b;
-  EXPECT_EQ(a, b);
-  EXPECT_EQ(a.name(), b.name());
-
-  const time_zone implicit_utc;
-  const time_zone explicit_utc = utc_time_zone();
-  EXPECT_EQ(implicit_utc, explicit_utc);
-  EXPECT_EQ(implicit_utc.name(), explicit_utc.name());
-
-  const time_zone fixed_zero =
-      fixed_time_zone(absl::time_internal::cctz::seconds::zero());
-  EXPECT_EQ(fixed_zero, LoadZone(fixed_zero.name()));
-  EXPECT_EQ(fixed_zero, explicit_utc);
-
-  const time_zone fixed_utc = LoadZone("Fixed/UTC+00:00:00");
-  EXPECT_EQ(fixed_utc, LoadZone(fixed_utc.name()));
-  EXPECT_EQ(fixed_utc, explicit_utc);
-
-  const time_zone fixed_pos = fixed_time_zone(
-      chrono::hours(3) + chrono::minutes(25) + chrono::seconds(45));
-  EXPECT_EQ(fixed_pos, LoadZone(fixed_pos.name()));
-  EXPECT_NE(fixed_pos, explicit_utc);
-  const time_zone fixed_neg = fixed_time_zone(
-      -(chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56)));
-  EXPECT_EQ(fixed_neg, LoadZone(fixed_neg.name()));
-  EXPECT_NE(fixed_neg, explicit_utc);
-
-  const time_zone fixed_lim = fixed_time_zone(chrono::hours(24));
-  EXPECT_EQ(fixed_lim, LoadZone(fixed_lim.name()));
-  EXPECT_NE(fixed_lim, explicit_utc);
-  const time_zone fixed_ovfl =
-      fixed_time_zone(chrono::hours(24) + chrono::seconds(1));
-  EXPECT_EQ(fixed_ovfl, LoadZone(fixed_ovfl.name()));
-  EXPECT_EQ(fixed_ovfl, explicit_utc);
-
-  EXPECT_EQ(fixed_time_zone(chrono::seconds(1)),
-            fixed_time_zone(chrono::seconds(1)));
-
-  const time_zone local = local_time_zone();
-  EXPECT_EQ(local, LoadZone(local.name()));
-
-  time_zone la = LoadZone("America/Los_Angeles");
-  time_zone nyc = LoadZone("America/New_York");
-  EXPECT_NE(la, nyc);
-}
-
-TEST(StdChronoTimePoint, TimeTAlignment) {
-  // Ensures that the Unix epoch and the system clock epoch are an integral
-  // number of seconds apart. This simplifies conversions to/from time_t.
-  auto diff =
-      chrono::system_clock::time_point() - chrono::system_clock::from_time_t(0);
-  EXPECT_EQ(chrono::system_clock::time_point::duration::zero(),
-            diff % chrono::seconds(1));
-}
-
-TEST(BreakTime, TimePointResolution) {
-  const time_zone utc = utc_time_zone();
-  const auto t0 = chrono::system_clock::from_time_t(0);
-
-  ExpectTime(chrono::time_point_cast<chrono::nanoseconds>(t0), utc, 1970, 1, 1,
-             0, 0, 0, 0, false, "UTC");
-  ExpectTime(chrono::time_point_cast<chrono::microseconds>(t0), utc, 1970, 1, 1,
-             0, 0, 0, 0, false, "UTC");
-  ExpectTime(chrono::time_point_cast<chrono::milliseconds>(t0), utc, 1970, 1, 1,
-             0, 0, 0, 0, false, "UTC");
-  ExpectTime(chrono::time_point_cast<chrono::seconds>(t0), utc, 1970, 1, 1, 0,
-             0, 0, 0, false, "UTC");
-  ExpectTime(chrono::time_point_cast<absl::time_internal::cctz::seconds>(t0),
-             utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC");
-  ExpectTime(chrono::time_point_cast<chrono::minutes>(t0), utc, 1970, 1, 1, 0,
-             0, 0, 0, false, "UTC");
-  ExpectTime(chrono::time_point_cast<chrono::hours>(t0), utc, 1970, 1, 1, 0, 0,
-             0, 0, false, "UTC");
-}
-
-TEST(BreakTime, LocalTimeInUTC) {
-  const time_zone tz = utc_time_zone();
-  const auto tp = chrono::system_clock::from_time_t(0);
-  ExpectTime(tp, tz, 1970, 1, 1, 0, 0, 0, 0, false, "UTC");
-  EXPECT_EQ(weekday::thursday, get_weekday(convert(tp, tz)));
-}
-
-TEST(BreakTime, LocalTimeInUTCUnaligned) {
-  const time_zone tz = utc_time_zone();
-  const auto tp =
-      chrono::system_clock::from_time_t(0) - chrono::milliseconds(500);
-  ExpectTime(tp, tz, 1969, 12, 31, 23, 59, 59, 0, false, "UTC");
-  EXPECT_EQ(weekday::wednesday, get_weekday(convert(tp, tz)));
-}
-
-TEST(BreakTime, LocalTimePosix) {
-  // See IEEE Std 1003.1-1988 B.2.3 General Terms, Epoch.
-  const time_zone tz = utc_time_zone();
-  const auto tp = chrono::system_clock::from_time_t(536457599);
-  ExpectTime(tp, tz, 1986, 12, 31, 23, 59, 59, 0, false, "UTC");
-  EXPECT_EQ(weekday::wednesday, get_weekday(convert(tp, tz)));
-}
-
-TEST(TimeZoneImpl, LocalTimeInFixed) {
-  const absl::time_internal::cctz::seconds offset =
-      -(chrono::hours(8) + chrono::minutes(33) + chrono::seconds(47));
-  const time_zone tz = fixed_time_zone(offset);
-  const auto tp = chrono::system_clock::from_time_t(0);
-  ExpectTime(tp, tz, 1969, 12, 31, 15, 26, 13, offset.count(), false,
-             "-083347");
-  EXPECT_EQ(weekday::wednesday, get_weekday(convert(tp, tz)));
-}
-
-TEST(BreakTime, LocalTimeInNewYork) {
-  const time_zone tz = LoadZone("America/New_York");
-  const auto tp = chrono::system_clock::from_time_t(45);
-  ExpectTime(tp, tz, 1969, 12, 31, 19, 0, 45, -5 * 60 * 60, false, "EST");
-  EXPECT_EQ(weekday::wednesday, get_weekday(convert(tp, tz)));
-}
-
-TEST(BreakTime, LocalTimeInMTV) {
-  const time_zone tz = LoadZone("America/Los_Angeles");
-  const auto tp = chrono::system_clock::from_time_t(1380855729);
-  ExpectTime(tp, tz, 2013, 10, 3, 20, 2, 9, -7 * 60 * 60, true, "PDT");
-  EXPECT_EQ(weekday::thursday, get_weekday(convert(tp, tz)));
-}
-
-TEST(BreakTime, LocalTimeInSydney) {
-  const time_zone tz = LoadZone("Australia/Sydney");
-  const auto tp = chrono::system_clock::from_time_t(90);
-  ExpectTime(tp, tz, 1970, 1, 1, 10, 1, 30, 10 * 60 * 60, false, "AEST");
-  EXPECT_EQ(weekday::thursday, get_weekday(convert(tp, tz)));
-}
-
-TEST(MakeTime, TimePointResolution) {
-  const time_zone utc = utc_time_zone();
-  const time_point<chrono::nanoseconds> tp_ns =
-      convert(civil_second(2015, 1, 2, 3, 4, 5), utc);
-  EXPECT_EQ("04:05", format("%M:%E*S", tp_ns, utc));
-  const time_point<chrono::microseconds> tp_us =
-      convert(civil_second(2015, 1, 2, 3, 4, 5), utc);
-  EXPECT_EQ("04:05", format("%M:%E*S", tp_us, utc));
-  const time_point<chrono::milliseconds> tp_ms =
-      convert(civil_second(2015, 1, 2, 3, 4, 5), utc);
-  EXPECT_EQ("04:05", format("%M:%E*S", tp_ms, utc));
-  const time_point<chrono::seconds> tp_s =
-      convert(civil_second(2015, 1, 2, 3, 4, 5), utc);
-  EXPECT_EQ("04:05", format("%M:%E*S", tp_s, utc));
-  const time_point<absl::time_internal::cctz::seconds> tp_s64 =
-      convert(civil_second(2015, 1, 2, 3, 4, 5), utc);
-  EXPECT_EQ("04:05", format("%M:%E*S", tp_s64, utc));
-
-  // These next two require chrono::time_point_cast because the conversion
-  // from a resolution of seconds (the return value of convert()) to a
-  // coarser resolution requires an explicit cast.
-  const time_point<chrono::minutes> tp_m =
-      chrono::time_point_cast<chrono::minutes>(
-          convert(civil_second(2015, 1, 2, 3, 4, 5), utc));
-  EXPECT_EQ("04:00", format("%M:%E*S", tp_m, utc));
-  const time_point<chrono::hours> tp_h = chrono::time_point_cast<chrono::hours>(
-      convert(civil_second(2015, 1, 2, 3, 4, 5), utc));
-  EXPECT_EQ("00:00", format("%M:%E*S", tp_h, utc));
-}
-
-TEST(MakeTime, Normalization) {
-  const time_zone tz = LoadZone("America/New_York");
-  const auto tp = convert(civil_second(2009, 2, 13, 18, 31, 30), tz);
-  EXPECT_EQ(chrono::system_clock::from_time_t(1234567890), tp);
-
-  // Now requests for the same time_point but with out-of-range fields.
-  EXPECT_EQ(tp, convert(civil_second(2008, 14, 13, 18, 31, 30), tz));  // month
-  EXPECT_EQ(tp, convert(civil_second(2009, 1, 44, 18, 31, 30), tz));   // day
-  EXPECT_EQ(tp, convert(civil_second(2009, 2, 12, 42, 31, 30), tz));   // hour
-  EXPECT_EQ(tp, convert(civil_second(2009, 2, 13, 17, 91, 30), tz));   // minute
-  EXPECT_EQ(tp, convert(civil_second(2009, 2, 13, 18, 30, 90), tz));   // second
-}
-
-// NOTE: Run this with -ftrapv to detect overflow problems.
-TEST(MakeTime, SysSecondsLimits) {
-  const char RFC3339[] = "%Y-%m-%d%ET%H:%M:%S%Ez";
-  const time_zone utc = utc_time_zone();
-  const time_zone east = fixed_time_zone(chrono::hours(14));
-  const time_zone west = fixed_time_zone(-chrono::hours(14));
-  time_point<absl::time_internal::cctz::seconds> tp;
-
-  // Approach the maximal time_point<cctz::seconds> value from below.
-  tp = convert(civil_second(292277026596, 12, 4, 15, 30, 6), utc);
-  EXPECT_EQ("292277026596-12-04T15:30:06+00:00", format(RFC3339, tp, utc));
-  tp = convert(civil_second(292277026596, 12, 4, 15, 30, 7), utc);
-  EXPECT_EQ("292277026596-12-04T15:30:07+00:00", format(RFC3339, tp, utc));
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-  tp = convert(civil_second(292277026596, 12, 4, 15, 30, 8), utc);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-  tp = convert(civil_second::max(), utc);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-
-  // Checks that we can also get the maximal value for a far-east zone.
-  tp = convert(civil_second(292277026596, 12, 5, 5, 30, 7), east);
-  EXPECT_EQ("292277026596-12-05T05:30:07+14:00", format(RFC3339, tp, east));
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-  tp = convert(civil_second(292277026596, 12, 5, 5, 30, 8), east);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-  tp = convert(civil_second::max(), east);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-
-  // Checks that we can also get the maximal value for a far-west zone.
-  tp = convert(civil_second(292277026596, 12, 4, 1, 30, 7), west);
-  EXPECT_EQ("292277026596-12-04T01:30:07-14:00", format(RFC3339, tp, west));
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-  tp = convert(civil_second(292277026596, 12, 4, 7, 30, 8), west);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-  tp = convert(civil_second::max(), west);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp);
-
-  // Approach the minimal time_point<cctz::seconds> value from above.
-  tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 53), utc);
-  EXPECT_EQ("-292277022657-01-27T08:29:53+00:00", format(RFC3339, tp, utc));
-  tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 52), utc);
-  EXPECT_EQ("-292277022657-01-27T08:29:52+00:00", format(RFC3339, tp, utc));
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-  tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 51), utc);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-  tp = convert(civil_second::min(), utc);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-
-  // Checks that we can also get the minimal value for a far-east zone.
-  tp = convert(civil_second(-292277022657, 1, 27, 22, 29, 52), east);
-  EXPECT_EQ("-292277022657-01-27T22:29:52+14:00", format(RFC3339, tp, east));
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-  tp = convert(civil_second(-292277022657, 1, 27, 22, 29, 51), east);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-  tp = convert(civil_second::min(), east);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-
-  // Checks that we can also get the minimal value for a far-west zone.
-  tp = convert(civil_second(-292277022657, 1, 26, 18, 29, 52), west);
-  EXPECT_EQ("-292277022657-01-26T18:29:52-14:00", format(RFC3339, tp, west));
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-  tp = convert(civil_second(-292277022657, 1, 26, 18, 29, 51), west);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-  tp = convert(civil_second::min(), west);
-  EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp);
-
-  // Some similar checks for the "libc" time-zone implementation.
-  if (sizeof(std::time_t) >= 8) {
-    // Checks that "tm_year + 1900", as used by the "libc" implementation,
-    // can produce year values beyond the range on an int without overflow.
-#if defined(_WIN32) || defined(_WIN64)
-    // localtime_s() and gmtime_s() don't believe in years outside [1970:3000].
-#else
-    const time_zone cut = LoadZone("libc:UTC");
-    const year_t max_tm_year = year_t{std::numeric_limits<int>::max()} + 1900;
-    tp = convert(civil_second(max_tm_year, 12, 31, 23, 59, 59), cut);
-#if defined(__FreeBSD__) || defined(__OpenBSD__)
-    // The BSD gmtime_r() fails on extreme positive tm_year values.
-#else
-    EXPECT_EQ("2147485547-12-31T23:59:59+00:00", format(RFC3339, tp, cut));
-#endif
-    const year_t min_tm_year = year_t{std::numeric_limits<int>::min()} + 1900;
-    tp = convert(civil_second(min_tm_year, 1, 1, 0, 0, 0), cut);
-    EXPECT_EQ("-2147481748-01-01T00:00:00+00:00", format(RFC3339, tp, cut));
-#endif
-  }
-}
-
-TEST(MakeTime, LocalTimeLibC) {
-  // Checks that cctz and libc agree on transition points in [1970:2037].
-  //
-  // We limit this test case to environments where:
-  //  1) we know how to change the time zone used by localtime()/mktime(),
-  //  2) cctz and localtime()/mktime() will use similar-enough tzdata, and
-  //  3) we have some idea about how mktime() behaves during transitions.
-#if defined(__linux__) && !defined(__ANDROID__)
-  const char* const ep = getenv("TZ");
-  std::string tz_name = (ep != nullptr) ? ep : "";
-  for (const char* const* np = kTimeZoneNames; *np != nullptr; ++np) {
-    ASSERT_EQ(0, setenv("TZ", *np, 1));  // change what "localtime" means
-    const auto zi = local_time_zone();
-    const auto lc = LoadZone("libc:localtime");
-    time_zone::civil_transition transition;
-    for (auto tp = zi.lookup(civil_second()).trans;
-         zi.next_transition(tp, &transition);
-         tp = zi.lookup(transition.to).trans) {
-      const auto fcl = zi.lookup(transition.from);
-      const auto tcl = zi.lookup(transition.to);
-      civil_second cs;  // compare cs in zi and lc
-      if (fcl.kind == time_zone::civil_lookup::UNIQUE) {
-        if (tcl.kind == time_zone::civil_lookup::UNIQUE) {
-          // Both unique; must be an is_dst or abbr change.
-          ASSERT_EQ(transition.from, transition.to);
-          const auto trans = fcl.trans;
-          const auto tal = zi.lookup(trans);
-          const auto tprev = trans - absl::time_internal::cctz::seconds(1);
-          const auto pal = zi.lookup(tprev);
-          if (pal.is_dst == tal.is_dst) {
-            ASSERT_STRNE(pal.abbr, tal.abbr);
-          }
-          continue;
-        }
-        ASSERT_EQ(time_zone::civil_lookup::REPEATED, tcl.kind);
-        cs = transition.to;
-      } else {
-        ASSERT_EQ(time_zone::civil_lookup::UNIQUE, tcl.kind);
-        ASSERT_EQ(time_zone::civil_lookup::SKIPPED, fcl.kind);
-        cs = transition.from;
-      }
-      if (cs.year() > 2037) break;  // limit test time (and to 32-bit time_t)
-      const auto cl_zi = zi.lookup(cs);
-      if (zi.lookup(cl_zi.pre).is_dst == zi.lookup(cl_zi.post).is_dst) {
-        // The "libc" implementation cannot correctly classify transitions
-        // that don't change the "tm_isdst" flag.  In Europe/Volgograd, for
-        // example, there is a SKIPPED transition from +03 to +04 with dst=F
-        // on both sides ...
-        //   1540681199 = 2018-10-28 01:59:59 +03:00:00 [dst=F off=10800]
-        //   1540681200 = 2018-10-28 03:00:00 +04:00:00 [dst=F off=14400]
-        // but std::mktime(2018-10-28 02:00:00, tm_isdst=0) fails, unlike,
-        // say, the similar Europe/Chisinau transition from +02 to +03 ...
-        //   1521935999 = 2018-03-25 01:59:59 +02:00:00 [dst=F off=7200]
-        //   1521936000 = 2018-03-25 03:00:00 +03:00:00 [dst=T off=10800]
-        // where std::mktime(2018-03-25 02:00:00, tm_isdst=0) succeeds and
-        // returns 1521936000.
-        continue;
-      }
-      if (cs == civil_second(2037, 10, 4, 2, 0, 0)) {
-        const std::string tzname = *np;
-        if (tzname == "Africa/Casablanca" || tzname == "Africa/El_Aaiun") {
-          // The "libc" implementation gets this transition wrong (at least
-          // until 2018g when it was removed), returning an offset of 3600
-          // instead of 0.  TODO: Revert this when 2018g is ubiquitous.
-          continue;
-        }
-      }
-      const auto cl_lc = lc.lookup(cs);
-      SCOPED_TRACE(testing::Message() << "For " << cs << " in " << *np);
-      EXPECT_EQ(cl_zi.kind, cl_lc.kind);
-      EXPECT_EQ(cl_zi.pre, cl_lc.pre);
-      EXPECT_EQ(cl_zi.trans, cl_lc.trans);
-      EXPECT_EQ(cl_zi.post, cl_lc.post);
-    }
-  }
-  if (ep == nullptr) {
-    ASSERT_EQ(0, unsetenv("TZ"));
-  } else {
-    ASSERT_EQ(0, setenv("TZ", tz_name.c_str(), 1));
-  }
-#endif
-}
-
-TEST(NextTransition, UTC) {
-  const auto tz = utc_time_zone();
-  time_zone::civil_transition trans;
-
-  auto tp = time_point<absl::time_internal::cctz::seconds>::min();
-  EXPECT_FALSE(tz.next_transition(tp, &trans));
-
-  tp = time_point<absl::time_internal::cctz::seconds>::max();
-  EXPECT_FALSE(tz.next_transition(tp, &trans));
-}
-
-TEST(PrevTransition, UTC) {
-  const auto tz = utc_time_zone();
-  time_zone::civil_transition trans;
-
-  auto tp = time_point<absl::time_internal::cctz::seconds>::max();
-  EXPECT_FALSE(tz.prev_transition(tp, &trans));
-
-  tp = time_point<absl::time_internal::cctz::seconds>::min();
-  EXPECT_FALSE(tz.prev_transition(tp, &trans));
-}
-
-TEST(NextTransition, AmericaNewYork) {
-  const auto tz = LoadZone("America/New_York");
-  time_zone::civil_transition trans;
-
-  auto tp = convert(civil_second(2018, 6, 30, 0, 0, 0), tz);
-  EXPECT_TRUE(tz.next_transition(tp, &trans));
-  EXPECT_EQ(civil_second(2018, 11, 4, 2, 0, 0), trans.from);
-  EXPECT_EQ(civil_second(2018, 11, 4, 1, 0, 0), trans.to);
-
-  tp = time_point<absl::time_internal::cctz::seconds>::max();
-  EXPECT_FALSE(tz.next_transition(tp, &trans));
-
-  tp = time_point<absl::time_internal::cctz::seconds>::min();
-  EXPECT_TRUE(tz.next_transition(tp, &trans));
-  if (trans.from == civil_second(1918, 3, 31, 2, 0, 0)) {
-    // It looks like the tzdata is only 32 bit (probably macOS),
-    // which bottoms out at 1901-12-13T20:45:52+00:00.
-    EXPECT_EQ(civil_second(1918, 3, 31, 3, 0, 0), trans.to);
-  } else {
-    EXPECT_EQ(civil_second(1883, 11, 18, 12, 3, 58), trans.from);
-    EXPECT_EQ(civil_second(1883, 11, 18, 12, 0, 0), trans.to);
-  }
-}
-
-TEST(PrevTransition, AmericaNewYork) {
-  const auto tz = LoadZone("America/New_York");
-  time_zone::civil_transition trans;
-
-  auto tp = convert(civil_second(2018, 6, 30, 0, 0, 0), tz);
-  EXPECT_TRUE(tz.prev_transition(tp, &trans));
-  EXPECT_EQ(civil_second(2018, 3, 11, 2, 0, 0), trans.from);
-  EXPECT_EQ(civil_second(2018, 3, 11, 3, 0, 0), trans.to);
-
-  tp = time_point<absl::time_internal::cctz::seconds>::min();
-  EXPECT_FALSE(tz.prev_transition(tp, &trans));
-
-  tp = time_point<absl::time_internal::cctz::seconds>::max();
-  EXPECT_TRUE(tz.prev_transition(tp, &trans));
-  // We have a transition but we don't know which one.
-}
-
-TEST(TimeZoneEdgeCase, AmericaNewYork) {
-  const time_zone tz = LoadZone("America/New_York");
-
-  // Spring 1:59:59 -> 3:00:00
-  auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -5 * 3600, false, "EST");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 3, 10, 3, 0, 0, -4 * 3600, true, "EDT");
-
-  // Fall 1:59:59 -> 1:00:00
-  tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -4 * 3600, true, "EDT");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 11, 3, 1, 0, 0, -5 * 3600, false, "EST");
-}
-
-TEST(TimeZoneEdgeCase, AmericaLosAngeles) {
-  const time_zone tz = LoadZone("America/Los_Angeles");
-
-  // Spring 1:59:59 -> 3:00:00
-  auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -8 * 3600, false, "PST");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 3, 10, 3, 0, 0, -7 * 3600, true, "PDT");
-
-  // Fall 1:59:59 -> 1:00:00
-  tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -7 * 3600, true, "PDT");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 11, 3, 1, 0, 0, -8 * 3600, false, "PST");
-}
-
-TEST(TimeZoneEdgeCase, ArizonaNoTransition) {
-  const time_zone tz = LoadZone("America/Phoenix");
-
-  // No transition in Spring.
-  auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -7 * 3600, false, "MST");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 3, 10, 2, 0, 0, -7 * 3600, false, "MST");
-
-  // No transition in Fall.
-  tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -7 * 3600, false, "MST");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 11, 3, 2, 0, 0, -7 * 3600, false, "MST");
-}
-
-TEST(TimeZoneEdgeCase, AsiaKathmandu) {
-  const time_zone tz = LoadZone("Asia/Kathmandu");
-
-  // A non-DST offset change from +0530 to +0545
-  //
-  //   504901799 == Tue, 31 Dec 1985 23:59:59 +0530 (+0530)
-  //   504901800 == Wed,  1 Jan 1986 00:15:00 +0545 (+0545)
-  auto tp = convert(civil_second(1985, 12, 31, 23, 59, 59), tz);
-  ExpectTime(tp, tz, 1985, 12, 31, 23, 59, 59, 5.5 * 3600, false, "+0530");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 1986, 1, 1, 0, 15, 0, 5.75 * 3600, false, "+0545");
-}
-
-TEST(TimeZoneEdgeCase, PacificChatham) {
-  const time_zone tz = LoadZone("Pacific/Chatham");
-
-  // One-hour DST offset changes, but at atypical values
-  //
-  //   1365256799 == Sun,  7 Apr 2013 03:44:59 +1345 (+1345)
-  //   1365256800 == Sun,  7 Apr 2013 02:45:00 +1245 (+1245)
-  auto tp = convert(civil_second(2013, 4, 7, 3, 44, 59), tz);
-  ExpectTime(tp, tz, 2013, 4, 7, 3, 44, 59, 13.75 * 3600, true, "+1345");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 4, 7, 2, 45, 0, 12.75 * 3600, false, "+1245");
-
-  //   1380376799 == Sun, 29 Sep 2013 02:44:59 +1245 (+1245)
-  //   1380376800 == Sun, 29 Sep 2013 03:45:00 +1345 (+1345)
-  tp = convert(civil_second(2013, 9, 29, 2, 44, 59), tz);
-  ExpectTime(tp, tz, 2013, 9, 29, 2, 44, 59, 12.75 * 3600, false, "+1245");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 9, 29, 3, 45, 0, 13.75 * 3600, true, "+1345");
-}
-
-TEST(TimeZoneEdgeCase, AustraliaLordHowe) {
-  const time_zone tz = LoadZone("Australia/Lord_Howe");
-
-  // Half-hour DST offset changes
-  //
-  //   1365260399 == Sun,  7 Apr 2013 01:59:59 +1100 (+11)
-  //   1365260400 == Sun,  7 Apr 2013 01:30:00 +1030 (+1030)
-  auto tp = convert(civil_second(2013, 4, 7, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 4, 7, 1, 59, 59, 11 * 3600, true, "+11");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 4, 7, 1, 30, 0, 10.5 * 3600, false, "+1030");
-
-  //   1380986999 == Sun,  6 Oct 2013 01:59:59 +1030 (+1030)
-  //   1380987000 == Sun,  6 Oct 2013 02:30:00 +1100 (+11)
-  tp = convert(civil_second(2013, 10, 6, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 2013, 10, 6, 1, 59, 59, 10.5 * 3600, false, "+1030");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2013, 10, 6, 2, 30, 0, 11 * 3600, true, "+11");
-}
-
-TEST(TimeZoneEdgeCase, PacificApia) {
-  const time_zone tz = LoadZone("Pacific/Apia");
-
-  // At the end of December 2011, Samoa jumped forward by one day,
-  // skipping 30 December from the local calendar, when the nation
-  // moved to the west of the International Date Line.
-  //
-  // A one-day, non-DST offset change
-  //
-  //   1325239199 == Thu, 29 Dec 2011 23:59:59 -1000 (-10)
-  //   1325239200 == Sat, 31 Dec 2011 00:00:00 +1400 (+14)
-  auto tp = convert(civil_second(2011, 12, 29, 23, 59, 59), tz);
-  ExpectTime(tp, tz, 2011, 12, 29, 23, 59, 59, -10 * 3600, true, "-10");
-  EXPECT_EQ(363, get_yearday(convert(tp, tz)));
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2011, 12, 31, 0, 0, 0, 14 * 3600, true, "+14");
-  EXPECT_EQ(365, get_yearday(convert(tp, tz)));
-}
-
-TEST(TimeZoneEdgeCase, AfricaCairo) {
-  const time_zone tz = LoadZone("Africa/Cairo");
-
-  if (VersionCmp(tz, "2014c") >= 0) {
-    // An interesting case of midnight not existing.
-    //
-    //   1400191199 == Thu, 15 May 2014 23:59:59 +0200 (EET)
-    //   1400191200 == Fri, 16 May 2014 01:00:00 +0300 (EEST)
-    auto tp = convert(civil_second(2014, 5, 15, 23, 59, 59), tz);
-    ExpectTime(tp, tz, 2014, 5, 15, 23, 59, 59, 2 * 3600, false, "EET");
-    tp += absl::time_internal::cctz::seconds(1);
-    ExpectTime(tp, tz, 2014, 5, 16, 1, 0, 0, 3 * 3600, true, "EEST");
-  }
-}
-
-TEST(TimeZoneEdgeCase, AfricaMonrovia) {
-  const time_zone tz = LoadZone("Africa/Monrovia");
-
-  if (VersionCmp(tz, "2017b") >= 0) {
-    // Strange offset change -00:44:30 -> +00:00:00 (non-DST)
-    //
-    //   63593069 == Thu,  6 Jan 1972 23:59:59 -0044 (MMT)
-    //   63593070 == Fri,  7 Jan 1972 00:44:30 +0000 (GMT)
-    auto tp = convert(civil_second(1972, 1, 6, 23, 59, 59), tz);
-    ExpectTime(tp, tz, 1972, 1, 6, 23, 59, 59, -44.5 * 60, false, "MMT");
-    tp += absl::time_internal::cctz::seconds(1);
-    ExpectTime(tp, tz, 1972, 1, 7, 0, 44, 30, 0 * 60, false, "GMT");
-  }
-}
-
-TEST(TimeZoneEdgeCase, AmericaJamaica) {
-  // Jamaica discontinued DST transitions in 1983, and is now at a
-  // constant -0500.  This makes it an interesting edge-case target.
-  // Note that the 32-bit times used in a (tzh_version == 0) zoneinfo
-  // file cannot represent the abbreviation-only transition of 1890,
-  // so we ignore the abbreviation by expecting what we received.
-  const time_zone tz = LoadZone("America/Jamaica");
-
-  // Before the first transition.
-  if (!tz.version().empty() && VersionCmp(tz, "2018d") >= 0) {
-    // We avoid the expectations on the -18430 offset below unless we are
-    // certain we have commit 907241e (Fix off-by-1 error for Jamaica and
-    // T&C before 1913) from 2018d.  TODO: Remove the "version() not empty"
-    // part when 2018d is generally available from /usr/share/zoneinfo.
-    auto tp = convert(civil_second(1889, 12, 31, 0, 0, 0), tz);
-    ExpectTime(tp, tz, 1889, 12, 31, 0, 0, 0, -18430, false,
-               tz.lookup(tp).abbr);
-
-    // Over the first (abbreviation-change only) transition.
-    //   -2524503170 == Tue, 31 Dec 1889 23:59:59 -0507 (LMT)
-    //   -2524503169 == Wed,  1 Jan 1890 00:00:00 -0507 (KMT)
-    tp = convert(civil_second(1889, 12, 31, 23, 59, 59), tz);
-    ExpectTime(tp, tz, 1889, 12, 31, 23, 59, 59, -18430, false,
-               tz.lookup(tp).abbr);
-    tp += absl::time_internal::cctz::seconds(1);
-    ExpectTime(tp, tz, 1890, 1, 1, 0, 0, 0, -18430, false, "KMT");
-  }
-
-  // Over the last (DST) transition.
-  //     436341599 == Sun, 30 Oct 1983 01:59:59 -0400 (EDT)
-  //     436341600 == Sun, 30 Oct 1983 01:00:00 -0500 (EST)
-  auto tp = convert(civil_second(1983, 10, 30, 1, 59, 59), tz);
-  ExpectTime(tp, tz, 1983, 10, 30, 1, 59, 59, -4 * 3600, true, "EDT");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 1983, 10, 30, 1, 0, 0, -5 * 3600, false, "EST");
-
-  // After the last transition.
-  tp = convert(civil_second(1983, 12, 31, 23, 59, 59), tz);
-  ExpectTime(tp, tz, 1983, 12, 31, 23, 59, 59, -5 * 3600, false, "EST");
-}
-
-TEST(TimeZoneEdgeCase, WET) {
-  // Cover some non-existent times within forward transitions.
-  const time_zone tz = LoadZone("WET");
-
-  // Before the first transition.
-  auto tp = convert(civil_second(1977, 1, 1, 0, 0, 0), tz);
-  ExpectTime(tp, tz, 1977, 1, 1, 0, 0, 0, 0, false, "WET");
-
-  // Over the first transition.
-  //     228877199 == Sun,  3 Apr 1977 00:59:59 +0000 (WET)
-  //     228877200 == Sun,  3 Apr 1977 02:00:00 +0100 (WEST)
-  tp = convert(civil_second(1977, 4, 3, 0, 59, 59), tz);
-  ExpectTime(tp, tz, 1977, 4, 3, 0, 59, 59, 0, false, "WET");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 1977, 4, 3, 2, 0, 0, 1 * 3600, true, "WEST");
-
-  // A non-existent time within the first transition.
-  time_zone::civil_lookup cl1 = tz.lookup(civil_second(1977, 4, 3, 1, 15, 0));
-  EXPECT_EQ(time_zone::civil_lookup::SKIPPED, cl1.kind);
-  ExpectTime(cl1.pre, tz, 1977, 4, 3, 2, 15, 0, 1 * 3600, true, "WEST");
-  ExpectTime(cl1.trans, tz, 1977, 4, 3, 2, 0, 0, 1 * 3600, true, "WEST");
-  ExpectTime(cl1.post, tz, 1977, 4, 3, 0, 15, 0, 0 * 3600, false, "WET");
-
-  // A non-existent time within the second forward transition.
-  time_zone::civil_lookup cl2 = tz.lookup(civil_second(1978, 4, 2, 1, 15, 0));
-  EXPECT_EQ(time_zone::civil_lookup::SKIPPED, cl2.kind);
-  ExpectTime(cl2.pre, tz, 1978, 4, 2, 2, 15, 0, 1 * 3600, true, "WEST");
-  ExpectTime(cl2.trans, tz, 1978, 4, 2, 2, 0, 0, 1 * 3600, true, "WEST");
-  ExpectTime(cl2.post, tz, 1978, 4, 2, 0, 15, 0, 0 * 3600, false, "WET");
-}
-
-TEST(TimeZoneEdgeCase, FixedOffsets) {
-  const time_zone gmtm5 = LoadZone("Etc/GMT+5");  // -0500
-  auto tp = convert(civil_second(1970, 1, 1, 0, 0, 0), gmtm5);
-  ExpectTime(tp, gmtm5, 1970, 1, 1, 0, 0, 0, -5 * 3600, false, "-05");
-  EXPECT_EQ(chrono::system_clock::from_time_t(5 * 3600), tp);
-
-  const time_zone gmtp5 = LoadZone("Etc/GMT-5");  // +0500
-  tp = convert(civil_second(1970, 1, 1, 0, 0, 0), gmtp5);
-  ExpectTime(tp, gmtp5, 1970, 1, 1, 0, 0, 0, 5 * 3600, false, "+05");
-  EXPECT_EQ(chrono::system_clock::from_time_t(-5 * 3600), tp);
-}
-
-TEST(TimeZoneEdgeCase, NegativeYear) {
-  // Tests transition from year 0 (aka 1BCE) to year -1.
-  const time_zone tz = utc_time_zone();
-  auto tp = convert(civil_second(0, 1, 1, 0, 0, 0), tz);
-  ExpectTime(tp, tz, 0, 1, 1, 0, 0, 0, 0 * 3600, false, "UTC");
-  EXPECT_EQ(weekday::saturday, get_weekday(convert(tp, tz)));
-  tp -= absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, -1, 12, 31, 23, 59, 59, 0 * 3600, false, "UTC");
-  EXPECT_EQ(weekday::friday, get_weekday(convert(tp, tz)));
-}
-
-TEST(TimeZoneEdgeCase, UTC32bitLimit) {
-  const time_zone tz = utc_time_zone();
-
-  // Limits of signed 32-bit time_t
-  //
-  //   2147483647 == Tue, 19 Jan 2038 03:14:07 +0000 (UTC)
-  //   2147483648 == Tue, 19 Jan 2038 03:14:08 +0000 (UTC)
-  auto tp = convert(civil_second(2038, 1, 19, 3, 14, 7), tz);
-  ExpectTime(tp, tz, 2038, 1, 19, 3, 14, 7, 0 * 3600, false, "UTC");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 2038, 1, 19, 3, 14, 8, 0 * 3600, false, "UTC");
-}
-
-TEST(TimeZoneEdgeCase, UTC5DigitYear) {
-  const time_zone tz = utc_time_zone();
-
-  // Rollover to 5-digit year
-  //
-  //   253402300799 == Fri, 31 Dec 9999 23:59:59 +0000 (UTC)
-  //   253402300800 == Sat,  1 Jan 1000 00:00:00 +0000 (UTC)
-  auto tp = convert(civil_second(9999, 12, 31, 23, 59, 59), tz);
-  ExpectTime(tp, tz, 9999, 12, 31, 23, 59, 59, 0 * 3600, false, "UTC");
-  tp += absl::time_internal::cctz::seconds(1);
-  ExpectTime(tp, tz, 10000, 1, 1, 0, 0, 0, 0 * 3600, false, "UTC");
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.cc
deleted file mode 100644
index 5cdd09e89d0e..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.cc
+++ /dev/null
@@ -1,159 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "time_zone_posix.h"
-
-#include <cstddef>
-#include <cstring>
-#include <limits>
-#include <string>
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-namespace {
-
-const char kDigits[] = "0123456789";
-
-const char* ParseInt(const char* p, int min, int max, int* vp) {
-  int value = 0;
-  const char* op = p;
-  const int kMaxInt = std::numeric_limits<int>::max();
-  for (; const char* dp = strchr(kDigits, *p); ++p) {
-    int d = static_cast<int>(dp - kDigits);
-    if (d >= 10) break;  // '\0'
-    if (value > kMaxInt / 10) return nullptr;
-    value *= 10;
-    if (value > kMaxInt - d) return nullptr;
-    value += d;
-  }
-  if (p == op || value < min || value > max) return nullptr;
-  *vp = value;
-  return p;
-}
-
-// abbr = <.*?> | [^-+,\d]{3,}
-const char* ParseAbbr(const char* p, std::string* abbr) {
-  const char* op = p;
-  if (*p == '<') {  // special zoneinfo <...> form
-    while (*++p != '>') {
-      if (*p == '\0') return nullptr;
-    }
-    abbr->assign(op + 1, static_cast<std::size_t>(p - op) - 1);
-    return ++p;
-  }
-  while (*p != '\0') {
-    if (strchr("-+,", *p)) break;
-    if (strchr(kDigits, *p)) break;
-    ++p;
-  }
-  if (p - op < 3) return nullptr;
-  abbr->assign(op, static_cast<std::size_t>(p - op));
-  return p;
-}
-
-// offset = [+|-]hh[:mm[:ss]] (aggregated into single seconds value)
-const char* ParseOffset(const char* p, int min_hour, int max_hour, int sign,
-                        std::int_fast32_t* offset) {
-  if (p == nullptr) return nullptr;
-  if (*p == '+' || *p == '-') {
-    if (*p++ == '-') sign = -sign;
-  }
-  int hours = 0;
-  int minutes = 0;
-  int seconds = 0;
-
-  p = ParseInt(p, min_hour, max_hour, &hours);
-  if (p == nullptr) return nullptr;
-  if (*p == ':') {
-    p = ParseInt(p + 1, 0, 59, &minutes);
-    if (p == nullptr) return nullptr;
-    if (*p == ':') {
-      p = ParseInt(p + 1, 0, 59, &seconds);
-      if (p == nullptr) return nullptr;
-    }
-  }
-  *offset = sign * ((((hours * 60) + minutes) * 60) + seconds);
-  return p;
-}
-
-// datetime = ( Jn | n | Mm.w.d ) [ / offset ]
-const char* ParseDateTime(const char* p, PosixTransition* res) {
-  if (p != nullptr && *p == ',') {
-    if (*++p == 'M') {
-      int month = 0;
-      if ((p = ParseInt(p + 1, 1, 12, &month)) != nullptr && *p == '.') {
-        int week = 0;
-        if ((p = ParseInt(p + 1, 1, 5, &week)) != nullptr && *p == '.') {
-          int weekday = 0;
-          if ((p = ParseInt(p + 1, 0, 6, &weekday)) != nullptr) {
-            res->date.fmt = PosixTransition::M;
-            res->date.m.month = static_cast<std::int_fast8_t>(month);
-            res->date.m.week = static_cast<std::int_fast8_t>(week);
-            res->date.m.weekday = static_cast<std::int_fast8_t>(weekday);
-          }
-        }
-      }
-    } else if (*p == 'J') {
-      int day = 0;
-      if ((p = ParseInt(p + 1, 1, 365, &day)) != nullptr) {
-        res->date.fmt = PosixTransition::J;
-        res->date.j.day = static_cast<std::int_fast16_t>(day);
-      }
-    } else {
-      int day = 0;
-      if ((p = ParseInt(p, 0, 365, &day)) != nullptr) {
-        res->date.fmt = PosixTransition::N;
-        res->date.n.day = static_cast<std::int_fast16_t>(day);
-      }
-    }
-  }
-  if (p != nullptr) {
-    res->time.offset = 2 * 60 * 60;  // default offset is 02:00:00
-    if (*p == '/') p = ParseOffset(p + 1, -167, 167, 1, &res->time.offset);
-  }
-  return p;
-}
-
-}  // namespace
-
-// spec = std offset [ dst [ offset ] , datetime , datetime ]
-bool ParsePosixSpec(const std::string& spec, PosixTimeZone* res) {
-  const char* p = spec.c_str();
-  if (*p == ':') return false;
-
-  p = ParseAbbr(p, &res->std_abbr);
-  p = ParseOffset(p, 0, 24, -1, &res->std_offset);
-  if (p == nullptr) return false;
-  if (*p == '\0') return true;
-
-  p = ParseAbbr(p, &res->dst_abbr);
-  if (p == nullptr) return false;
-  res->dst_offset = res->std_offset + (60 * 60);  // default
-  if (*p != ',') p = ParseOffset(p, 0, 24, -1, &res->dst_offset);
-
-  p = ParseDateTime(p, &res->dst_start);
-  p = ParseDateTime(p, &res->dst_end);
-
-  return p != nullptr && *p == '\0';
-}
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.h
deleted file mode 100644
index 0cf29055f56a..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/time_zone_posix.h
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-// Parsing of a POSIX zone spec as described in the TZ part of section 8.3 in
-// http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html.
-//
-// The current POSIX spec for America/Los_Angeles is "PST8PDT,M3.2.0,M11.1.0",
-// which would be broken down as ...
-//
-//   PosixTimeZone {
-//     std_abbr = "PST"
-//     std_offset = -28800
-//     dst_abbr = "PDT"
-//     dst_offset = -25200
-//     dst_start = PosixTransition {
-//       date {
-//         m {
-//           month = 3
-//           week = 2
-//           weekday = 0
-//         }
-//       }
-//       time {
-//         offset = 7200
-//       }
-//     }
-//     dst_end = PosixTransition {
-//       date {
-//         m {
-//           month = 11
-//           week = 1
-//           weekday = 0
-//         }
-//       }
-//       time {
-//         offset = 7200
-//       }
-//     }
-//   }
-
-#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_
-#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_
-
-#include <cstdint>
-#include <string>
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// The date/time of the transition. The date is specified as either:
-// (J) the Nth day of the year (1 <= N <= 365), excluding leap days, or
-// (N) the Nth day of the year (0 <= N <= 365), including leap days, or
-// (M) the Nth weekday of a month (e.g., the 2nd Sunday in March).
-// The time, specified as a day offset, identifies the particular moment
-// of the transition, and may be negative or >= 24h, and in which case
-// it would take us to another day, and perhaps week, or even month.
-struct PosixTransition {
-  enum DateFormat { J, N, M };
-
-  struct Date {
-    struct NonLeapDay {
-      std::int_fast16_t day;  // day of non-leap year [1:365]
-    };
-    struct Day {
-      std::int_fast16_t day;  // day of year [0:365]
-    };
-    struct MonthWeekWeekday {
-      std::int_fast8_t month;    // month of year [1:12]
-      std::int_fast8_t week;     // week of month [1:5] (5==last)
-      std::int_fast8_t weekday;  // 0==Sun, ..., 6=Sat
-    };
-
-    DateFormat fmt;
-
-    union {
-      NonLeapDay j;
-      Day n;
-      MonthWeekWeekday m;
-    };
-  };
-
-  struct Time {
-    std::int_fast32_t offset;  // seconds before/after 00:00:00
-  };
-
-  Date date;
-  Time time;
-};
-
-// The entirety of a POSIX-string specified time-zone rule. The standard
-// abbreviation and offset are always given. If the time zone includes
-// daylight saving, then the daylight abbrevation is non-empty and the
-// remaining fields are also valid. Note that the start/end transitions
-// are not ordered---in the southern hemisphere the transition to end
-// daylight time occurs first in any particular year.
-struct PosixTimeZone {
-  std::string std_abbr;
-  std::int_fast32_t std_offset;
-
-  std::string dst_abbr;
-  std::int_fast32_t dst_offset;
-  PosixTransition dst_start;
-  PosixTransition dst_end;
-};
-
-// Breaks down a POSIX time-zone specification into its constituent pieces,
-// filling in any missing values (DST offset, or start/end transition times)
-// with the standard-defined defaults. Returns false if the specification
-// could not be parsed (although some fields of *res may have been altered).
-bool ParsePosixSpec(const std::string& spec, PosixTimeZone* res);
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/tzfile.h b/third_party/abseil_cpp/absl/time/internal/cctz/src/tzfile.h
deleted file mode 100644
index 269fa36c537a..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/tzfile.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/* Layout and location of TZif files.  */
-
-#ifndef TZFILE_H
-
-#define TZFILE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*
-** This header is for use ONLY with the time conversion code.
-** There is no guarantee that it will remain unchanged,
-** or that it will remain at all.
-** Do NOT copy it to any system include directory.
-** Thank you!
-*/
-
-/*
-** Information about time zone files.
-*/
-
-#ifndef TZDIR
-#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
-#endif                              /* !defined TZDIR */
-
-#ifndef TZDEFAULT
-#define TZDEFAULT "/etc/localtime"
-#endif /* !defined TZDEFAULT */
-
-#ifndef TZDEFRULES
-#define TZDEFRULES "posixrules"
-#endif /* !defined TZDEFRULES */
-
-/* See Internet RFC 8536 for more details about the following format.  */
-
-/*
-** Each file begins with. . .
-*/
-
-#define TZ_MAGIC "TZif"
-
-struct tzhead {
-  char tzh_magic[4];      /* TZ_MAGIC */
-  char tzh_version[1];    /* '\0' or '2' or '3' as of 2013 */
-  char tzh_reserved[15];  /* reserved; must be zero */
-  char tzh_ttisutcnt[4];  /* coded number of trans. time flags */
-  char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
-  char tzh_leapcnt[4];    /* coded number of leap seconds */
-  char tzh_timecnt[4];    /* coded number of transition times */
-  char tzh_typecnt[4];    /* coded number of local time types */
-  char tzh_charcnt[4];    /* coded number of abbr. chars */
-};
-
-/*
-** . . .followed by. . .
-**
-**	tzh_timecnt (char [4])s		coded transition times a la time(2)
-**	tzh_timecnt (unsigned char)s	types of local time starting at above
-**	tzh_typecnt repetitions of
-**		one (char [4])		coded UT offset in seconds
-**		one (unsigned char)	used to set tm_isdst
-**		one (unsigned char)	that's an abbreviation list index
-**	tzh_charcnt (char)s		'\0'-terminated zone abbreviations
-**	tzh_leapcnt repetitions of
-**		one (char [4])		coded leap second transition times
-**		one (char [4])		total correction after above
-**	tzh_ttisstdcnt (char)s		indexed by type; if 1, transition
-**					time is standard time, if 0,
-**					transition time is local (wall clock)
-**					time; if absent, transition times are
-**					assumed to be local time
-**	tzh_ttisutcnt (char)s		indexed by type; if 1, transition
-**					time is UT, if 0, transition time is
-**					local time; if absent, transition
-**					times are assumed to be local time.
-**					When this is 1, the corresponding
-**					std/wall indicator must also be 1.
-*/
-
-/*
-** If tzh_version is '2' or greater, the above is followed by a second instance
-** of tzhead and a second instance of the data in which each coded transition
-** time uses 8 rather than 4 chars,
-** then a POSIX-TZ-environment-variable-style string for use in handling
-** instants after the last transition time stored in the file
-** (with nothing between the newlines if there is no POSIX representation for
-** such instants).
-**
-** If tz_version is '3' or greater, the above is extended as follows.
-** First, the POSIX TZ string's hour offset may range from -167
-** through 167 as compared to the POSIX-required 0 through 24.
-** Second, its DST start time may be January 1 at 00:00 and its stop
-** time December 31 at 24:00 plus the difference between DST and
-** standard time, indicating DST all year.
-*/
-
-/*
-** In the current implementation, "tzset()" refuses to deal with files that
-** exceed any of the limits below.
-*/
-
-#ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES 2000
-#endif /* !defined TZ_MAX_TIMES */
-
-#ifndef TZ_MAX_TYPES
-/* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
-#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
-#endif                   /* !defined TZ_MAX_TYPES */
-
-#ifndef TZ_MAX_CHARS
-#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
-                        /* (limited by what unsigned chars can hold) */
-#endif                  /* !defined TZ_MAX_CHARS */
-
-#ifndef TZ_MAX_LEAPS
-#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
-#endif                  /* !defined TZ_MAX_LEAPS */
-
-#endif /* !defined TZFILE_H */
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/src/zone_info_source.cc b/third_party/abseil_cpp/absl/time/internal/cctz/src/zone_info_source.cc
deleted file mode 100644
index 72095339c3c1..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/src/zone_info_source.cc
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   https://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-#include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz {
-
-// Defined out-of-line to avoid emitting a weak vtable in all TUs.
-ZoneInfoSource::~ZoneInfoSource() {}
-std::string ZoneInfoSource::Version() const { return std::string(); }
-
-}  // namespace cctz
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace time_internal {
-namespace cctz_extension {
-
-namespace {
-
-// A default for cctz_extension::zone_info_source_factory, which simply
-// defers to the fallback factory.
-std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> DefaultFactory(
-    const std::string& name,
-    const std::function<
-        std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>(
-            const std::string& name)>& fallback_factory) {
-  return fallback_factory(name);
-}
-
-}  // namespace
-
-// A "weak" definition for cctz_extension::zone_info_source_factory.
-// The user may override this with their own "strong" definition (see
-// zone_info_source.h).
-#if !defined(__has_attribute)
-#define __has_attribute(x) 0
-#endif
-// MinGW is GCC on Windows, so while it asserts __has_attribute(weak), the
-// Windows linker cannot handle that. Nor does the MinGW compiler know how to
-// pass "#pragma comment(linker, ...)" to the Windows linker.
-#if (__has_attribute(weak) || defined(__GNUC__)) && !defined(__MINGW32__)
-ZoneInfoSourceFactory zone_info_source_factory __attribute__((weak)) =
-    DefaultFactory;
-#elif defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_LIBCPP_VERSION)
-extern ZoneInfoSourceFactory zone_info_source_factory;
-extern ZoneInfoSourceFactory default_factory;
-ZoneInfoSourceFactory default_factory = DefaultFactory;
-#if defined(_M_IX86)
-#pragma comment(                                                                                                         \
-    linker,                                                                                                              \
-    "/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                    \
-    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                 \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
-    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
-    "@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
-    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
-    "@@ZA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                                       \
-    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                 \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
-    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
-    "@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
-    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
-    "@@ZA")
-#elif defined(_M_IA_64) || defined(_M_AMD64) || defined(_M_ARM) || \
-    defined(_M_ARM64)
-#pragma comment(                                                                                                          \
-    linker,                                                                                                               \
-    "/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                     \
-    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                  \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
-    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
-    "@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
-    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
-    "@@ZEA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                                       \
-    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                  \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
-    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
-    "@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
-    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
-    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
-    "@@ZEA")
-#else
-#error Unsupported MSVC platform
-#endif  // _M_<PLATFORM>
-#else
-// Make it a "strong" definition if we have no other choice.
-ZoneInfoSourceFactory zone_info_source_factory = DefaultFactory;
-#endif
-
-}  // namespace cctz_extension
-}  // namespace time_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/README.zoneinfo b/third_party/abseil_cpp/absl/time/internal/cctz/testdata/README.zoneinfo
deleted file mode 100644
index 95fb4a91d17e..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/README.zoneinfo
+++ /dev/null
@@ -1,37 +0,0 @@
-testdata/zoneinfo contains time-zone data files that may be used with CCTZ.
-Install them in a location referenced by the ${TZDIR} environment variable.
-Symbolic and hard links have been eliminated for portability.
-
-On Linux systems the distribution's versions of these files can probably
-already be found in the default ${TZDIR} location, /usr/share/zoneinfo.
-
-New versions can be generated using the following shell script.
-
-  #!/bin/sh -
-  set -e
-  DESTDIR=$(mktemp -d)
-  trap "rm -fr ${DESTDIR}" 0 2 15
-  (
-    cd ${DESTDIR}
-    git clone https://github.com/eggert/tz.git
-    make --directory=tz \
-        install DESTDIR=${DESTDIR} \
-                DATAFORM=vanguard \
-                TZDIR=/zoneinfo \
-                REDO=posix_only \
-                LOCALTIME=Factory \
-                TZDATA_TEXT= \
-                ZONETABLES=zone1970.tab
-    tar --create --dereference --hard-dereference --file tzfile.tar \
-        --directory=tz tzfile.h
-    tar --create --dereference --hard-dereference --file zoneinfo.tar \
-        --exclude=zoneinfo/posixrules zoneinfo \
-        --directory=tz version
-  )
-  tar --extract --directory src --file ${DESTDIR}/tzfile.tar
-  tar --extract --directory testdata --file ${DESTDIR}/zoneinfo.tar
-  exit 0
-
-To run the CCTZ tests using the testdata/zoneinfo files, execute:
-
-  bazel test --test_env=TZDIR=${PWD}/testdata/zoneinfo ...
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/version b/third_party/abseil_cpp/absl/time/internal/cctz/testdata/version
deleted file mode 100644
index b4410dce16a3..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/version
+++ /dev/null
@@ -1 +0,0 @@
-2020d
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjan b/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjan
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@@ -1,274 +0,0 @@
-# ISO 3166 alpha-2 country codes
-#
-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-#
-# From Paul Eggert (2015-05-02):
-# This file contains a table of two-letter country codes.  Columns are
-# separated by a single tab.  Lines beginning with '#' are comments.
-# All text uses UTF-8 encoding.  The columns of the table are as follows:
-#
-# 1.  ISO 3166-1 alpha-2 country code, current as of
-#     ISO 3166-1 N976 (2018-11-06).  See: Updates on ISO 3166-1
-#     https://isotc.iso.org/livelink/livelink/Open/16944257
-# 2.  The usual English name for the coded region,
-#     chosen so that alphabetic sorting of subsets produces helpful lists.
-#     This is not the same as the English name in the ISO 3166 tables.
-#
-# The table is sorted by country code.
-#
-# This table is intended as an aid for users, to help them select time
-# zone data appropriate for their practical needs.  It is not intended
-# to take or endorse any position on legal or territorial claims.
-#
-#country-
-#code	name of country, territory, area, or subdivision
-AD	Andorra
-AE	United Arab Emirates
-AF	Afghanistan
-AG	Antigua & Barbuda
-AI	Anguilla
-AL	Albania
-AM	Armenia
-AO	Angola
-AQ	Antarctica
-AR	Argentina
-AS	Samoa (American)
-AT	Austria
-AU	Australia
-AW	Aruba
-AX	Åland Islands
-AZ	Azerbaijan
-BA	Bosnia & Herzegovina
-BB	Barbados
-BD	Bangladesh
-BE	Belgium
-BF	Burkina Faso
-BG	Bulgaria
-BH	Bahrain
-BI	Burundi
-BJ	Benin
-BL	St Barthelemy
-BM	Bermuda
-BN	Brunei
-BO	Bolivia
-BQ	Caribbean NL
-BR	Brazil
-BS	Bahamas
-BT	Bhutan
-BV	Bouvet Island
-BW	Botswana
-BY	Belarus
-BZ	Belize
-CA	Canada
-CC	Cocos (Keeling) Islands
-CD	Congo (Dem. Rep.)
-CF	Central African Rep.
-CG	Congo (Rep.)
-CH	Switzerland
-CI	Côte d'Ivoire
-CK	Cook Islands
-CL	Chile
-CM	Cameroon
-CN	China
-CO	Colombia
-CR	Costa Rica
-CU	Cuba
-CV	Cape Verde
-CW	Curaçao
-CX	Christmas Island
-CY	Cyprus
-CZ	Czech Republic
-DE	Germany
-DJ	Djibouti
-DK	Denmark
-DM	Dominica
-DO	Dominican Republic
-DZ	Algeria
-EC	Ecuador
-EE	Estonia
-EG	Egypt
-EH	Western Sahara
-ER	Eritrea
-ES	Spain
-ET	Ethiopia
-FI	Finland
-FJ	Fiji
-FK	Falkland Islands
-FM	Micronesia
-FO	Faroe Islands
-FR	France
-GA	Gabon
-GB	Britain (UK)
-GD	Grenada
-GE	Georgia
-GF	French Guiana
-GG	Guernsey
-GH	Ghana
-GI	Gibraltar
-GL	Greenland
-GM	Gambia
-GN	Guinea
-GP	Guadeloupe
-GQ	Equatorial Guinea
-GR	Greece
-GS	South Georgia & the South Sandwich Islands
-GT	Guatemala
-GU	Guam
-GW	Guinea-Bissau
-GY	Guyana
-HK	Hong Kong
-HM	Heard Island & McDonald Islands
-HN	Honduras
-HR	Croatia
-HT	Haiti
-HU	Hungary
-ID	Indonesia
-IE	Ireland
-IL	Israel
-IM	Isle of Man
-IN	India
-IO	British Indian Ocean Territory
-IQ	Iraq
-IR	Iran
-IS	Iceland
-IT	Italy
-JE	Jersey
-JM	Jamaica
-JO	Jordan
-JP	Japan
-KE	Kenya
-KG	Kyrgyzstan
-KH	Cambodia
-KI	Kiribati
-KM	Comoros
-KN	St Kitts & Nevis
-KP	Korea (North)
-KR	Korea (South)
-KW	Kuwait
-KY	Cayman Islands
-KZ	Kazakhstan
-LA	Laos
-LB	Lebanon
-LC	St Lucia
-LI	Liechtenstein
-LK	Sri Lanka
-LR	Liberia
-LS	Lesotho
-LT	Lithuania
-LU	Luxembourg
-LV	Latvia
-LY	Libya
-MA	Morocco
-MC	Monaco
-MD	Moldova
-ME	Montenegro
-MF	St Martin (French)
-MG	Madagascar
-MH	Marshall Islands
-MK	North Macedonia
-ML	Mali
-MM	Myanmar (Burma)
-MN	Mongolia
-MO	Macau
-MP	Northern Mariana Islands
-MQ	Martinique
-MR	Mauritania
-MS	Montserrat
-MT	Malta
-MU	Mauritius
-MV	Maldives
-MW	Malawi
-MX	Mexico
-MY	Malaysia
-MZ	Mozambique
-NA	Namibia
-NC	New Caledonia
-NE	Niger
-NF	Norfolk Island
-NG	Nigeria
-NI	Nicaragua
-NL	Netherlands
-NO	Norway
-NP	Nepal
-NR	Nauru
-NU	Niue
-NZ	New Zealand
-OM	Oman
-PA	Panama
-PE	Peru
-PF	French Polynesia
-PG	Papua New Guinea
-PH	Philippines
-PK	Pakistan
-PL	Poland
-PM	St Pierre & Miquelon
-PN	Pitcairn
-PR	Puerto Rico
-PS	Palestine
-PT	Portugal
-PW	Palau
-PY	Paraguay
-QA	Qatar
-RE	Réunion
-RO	Romania
-RS	Serbia
-RU	Russia
-RW	Rwanda
-SA	Saudi Arabia
-SB	Solomon Islands
-SC	Seychelles
-SD	Sudan
-SE	Sweden
-SG	Singapore
-SH	St Helena
-SI	Slovenia
-SJ	Svalbard & Jan Mayen
-SK	Slovakia
-SL	Sierra Leone
-SM	San Marino
-SN	Senegal
-SO	Somalia
-SR	Suriname
-SS	South Sudan
-ST	Sao Tome & Principe
-SV	El Salvador
-SX	St Maarten (Dutch)
-SY	Syria
-SZ	Eswatini (Swaziland)
-TC	Turks & Caicos Is
-TD	Chad
-TF	French Southern & Antarctic Lands
-TG	Togo
-TH	Thailand
-TJ	Tajikistan
-TK	Tokelau
-TL	East Timor
-TM	Turkmenistan
-TN	Tunisia
-TO	Tonga
-TR	Turkey
-TT	Trinidad & Tobago
-TV	Tuvalu
-TW	Taiwan
-TZ	Tanzania
-UA	Ukraine
-UG	Uganda
-UM	US minor outlying islands
-US	United States
-UY	Uruguay
-UZ	Uzbekistan
-VA	Vatican City
-VC	St Vincent
-VE	Venezuela
-VG	Virgin Islands (UK)
-VI	Virgin Islands (US)
-VN	Vietnam
-VU	Vanuatu
-WF	Wallis & Futuna
-WS	Samoa (western)
-YE	Yemen
-YT	Mayotte
-ZA	South Africa
-ZM	Zambia
-ZW	Zimbabwe
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/localtime b/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/localtime
deleted file mode 100644
index afeeb88d0628..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/localtime
+++ /dev/null
Binary files differdiff --git a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab b/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
deleted file mode 100644
index 53ee77e88e5e..000000000000
--- a/third_party/abseil_cpp/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
+++ /dev/null
@@ -1,384 +0,0 @@
-# tzdb timezone descriptions
-#
-# This file is in the public domain.
-#
-# From Paul Eggert (2018-06-27):
-# This file contains a table where each row stands for a timezone where
-# civil timestamps have agreed since 1970.  Columns are separated by
-# a single tab.  Lines beginning with '#' are comments.  All text uses
-# UTF-8 encoding.  The columns of the table are as follows:
-#
-# 1.  The countries that overlap the timezone, as a comma-separated list
-#     of ISO 3166 2-character country codes.  See the file 'iso3166.tab'.
-# 2.  Latitude and longitude of the timezone's principal location
-#     in ISO 6709 sign-degrees-minutes-seconds format,
-#     either ±DDMM±DDDMM or ±DDMMSS±DDDMMSS,
-#     first latitude (+ is north), then longitude (+ is east).
-# 3.  Timezone name used in value of TZ environment variable.
-#     Please see the theory.html file for how these names are chosen.
-#     If multiple timezones overlap a country, each has a row in the
-#     table, with each column 1 containing the country code.
-# 4.  Comments; present if and only if a country has multiple timezones.
-#
-# If a timezone covers multiple countries, the most-populous city is used,
-# and that country is listed first in column 1; any other countries
-# are listed alphabetically by country code.  The table is sorted
-# first by country code, then (if possible) by an order within the
-# country that (1) makes some geographical sense, and (2) puts the
-# most populous timezones first, where that does not contradict (1).
-#
-# This table is intended as an aid for users, to help them select timezones
-# appropriate for their practical needs.  It is not intended to take or
-# endorse any position on legal or territorial claims.
-#
-#country-
-#codes	coordinates	TZ	comments
-AD	+4230+00131	Europe/Andorra
-AE,OM	+2518+05518	Asia/Dubai
-AF	+3431+06912	Asia/Kabul
-AL	+4120+01950	Europe/Tirane
-AM	+4011+04430	Asia/Yerevan
-AQ	-6617+11031	Antarctica/Casey	Casey
-AQ	-6835+07758	Antarctica/Davis	Davis
-AQ	-6640+14001	Antarctica/DumontDUrville	Dumont-d'Urville
-AQ	-6736+06253	Antarctica/Mawson	Mawson
-AQ	-6448-06406	Antarctica/Palmer	Palmer
-AQ	-6734-06808	Antarctica/Rothera	Rothera
-AQ	-690022+0393524	Antarctica/Syowa	Syowa
-AQ	-720041+0023206	Antarctica/Troll	Troll
-AQ	-7824+10654	Antarctica/Vostok	Vostok
-AR	-3436-05827	America/Argentina/Buenos_Aires	Buenos Aires (BA, CF)
-AR	-3124-06411	America/Argentina/Cordoba	Argentina (most areas: CB, CC, CN, ER, FM, MN, SE, SF)
-AR	-2447-06525	America/Argentina/Salta	Salta (SA, LP, NQ, RN)
-AR	-2411-06518	America/Argentina/Jujuy	Jujuy (JY)
-AR	-2649-06513	America/Argentina/Tucuman	Tucumán (TM)
-AR	-2828-06547	America/Argentina/Catamarca	Catamarca (CT); Chubut (CH)
-AR	-2926-06651	America/Argentina/La_Rioja	La Rioja (LR)
-AR	-3132-06831	America/Argentina/San_Juan	San Juan (SJ)
-AR	-3253-06849	America/Argentina/Mendoza	Mendoza (MZ)
-AR	-3319-06621	America/Argentina/San_Luis	San Luis (SL)
-AR	-5138-06913	America/Argentina/Rio_Gallegos	Santa Cruz (SC)
-AR	-5448-06818	America/Argentina/Ushuaia	Tierra del Fuego (TF)
-AS,UM	-1416-17042	Pacific/Pago_Pago	Samoa, Midway
-AT	+4813+01620	Europe/Vienna
-AU	-3133+15905	Australia/Lord_Howe	Lord Howe Island
-AU	-5430+15857	Antarctica/Macquarie	Macquarie Island
-AU	-4253+14719	Australia/Hobart	Tasmania (most areas)
-AU	-3956+14352	Australia/Currie	Tasmania (King Island)
-AU	-3749+14458	Australia/Melbourne	Victoria
-AU	-3352+15113	Australia/Sydney	New South Wales (most areas)
-AU	-3157+14127	Australia/Broken_Hill	New South Wales (Yancowinna)
-AU	-2728+15302	Australia/Brisbane	Queensland (most areas)
-AU	-2016+14900	Australia/Lindeman	Queensland (Whitsunday Islands)
-AU	-3455+13835	Australia/Adelaide	South Australia
-AU	-1228+13050	Australia/Darwin	Northern Territory
-AU	-3157+11551	Australia/Perth	Western Australia (most areas)
-AU	-3143+12852	Australia/Eucla	Western Australia (Eucla)
-AZ	+4023+04951	Asia/Baku
-BB	+1306-05937	America/Barbados
-BD	+2343+09025	Asia/Dhaka
-BE	+5050+00420	Europe/Brussels
-BG	+4241+02319	Europe/Sofia
-BM	+3217-06446	Atlantic/Bermuda
-BN	+0456+11455	Asia/Brunei
-BO	-1630-06809	America/La_Paz
-BR	-0351-03225	America/Noronha	Atlantic islands
-BR	-0127-04829	America/Belem	Pará (east); Amapá
-BR	-0343-03830	America/Fortaleza	Brazil (northeast: MA, PI, CE, RN, PB)
-BR	-0803-03454	America/Recife	Pernambuco
-BR	-0712-04812	America/Araguaina	Tocantins
-BR	-0940-03543	America/Maceio	Alagoas, Sergipe
-BR	-1259-03831	America/Bahia	Bahia
-BR	-2332-04637	America/Sao_Paulo	Brazil (southeast: GO, DF, MG, ES, RJ, SP, PR, SC, RS)
-BR	-2027-05437	America/Campo_Grande	Mato Grosso do Sul
-BR	-1535-05605	America/Cuiaba	Mato Grosso
-BR	-0226-05452	America/Santarem	Pará (west)
-BR	-0846-06354	America/Porto_Velho	Rondônia
-BR	+0249-06040	America/Boa_Vista	Roraima
-BR	-0308-06001	America/Manaus	Amazonas (east)
-BR	-0640-06952	America/Eirunepe	Amazonas (west)
-BR	-0958-06748	America/Rio_Branco	Acre
-BS	+2505-07721	America/Nassau
-BT	+2728+08939	Asia/Thimphu
-BY	+5354+02734	Europe/Minsk
-BZ	+1730-08812	America/Belize
-CA	+4734-05243	America/St_Johns	Newfoundland; Labrador (southeast)
-CA	+4439-06336	America/Halifax	Atlantic - NS (most areas); PE
-CA	+4612-05957	America/Glace_Bay	Atlantic - NS (Cape Breton)
-CA	+4606-06447	America/Moncton	Atlantic - New Brunswick
-CA	+5320-06025	America/Goose_Bay	Atlantic - Labrador (most areas)
-CA	+5125-05707	America/Blanc-Sablon	AST - QC (Lower North Shore)
-CA	+4339-07923	America/Toronto	Eastern - ON, QC (most areas)
-CA	+4901-08816	America/Nipigon	Eastern - ON, QC (no DST 1967-73)
-CA	+4823-08915	America/Thunder_Bay	Eastern - ON (Thunder Bay)
-CA	+6344-06828	America/Iqaluit	Eastern - NU (most east areas)
-CA	+6608-06544	America/Pangnirtung	Eastern - NU (Pangnirtung)
-CA	+484531-0913718	America/Atikokan	EST - ON (Atikokan); NU (Coral H)
-CA	+4953-09709	America/Winnipeg	Central - ON (west); Manitoba
-CA	+4843-09434	America/Rainy_River	Central - ON (Rainy R, Ft Frances)
-CA	+744144-0944945	America/Resolute	Central - NU (Resolute)
-CA	+624900-0920459	America/Rankin_Inlet	Central - NU (central)
-CA	+5024-10439	America/Regina	CST - SK (most areas)
-CA	+5017-10750	America/Swift_Current	CST - SK (midwest)
-CA	+5333-11328	America/Edmonton	Mountain - AB; BC (E); SK (W)
-CA	+690650-1050310	America/Cambridge_Bay	Mountain - NU (west)
-CA	+6227-11421	America/Yellowknife	Mountain - NT (central)
-CA	+682059-1334300	America/Inuvik	Mountain - NT (west)
-CA	+4906-11631	America/Creston	MST - BC (Creston)
-CA	+5946-12014	America/Dawson_Creek	MST - BC (Dawson Cr, Ft St John)
-CA	+5848-12242	America/Fort_Nelson	MST - BC (Ft Nelson)
-CA	+4916-12307	America/Vancouver	Pacific - BC (most areas)
-CA	+6043-13503	America/Whitehorse	Pacific - Yukon (east)
-CA	+6404-13925	America/Dawson	Pacific - Yukon (west)
-CC	-1210+09655	Indian/Cocos
-CH,DE,LI	+4723+00832	Europe/Zurich	Swiss time
-CI,BF,GM,GN,ML,MR,SH,SL,SN,TG	+0519-00402	Africa/Abidjan
-CK	-2114-15946	Pacific/Rarotonga
-CL	-3327-07040	America/Santiago	Chile (most areas)
-CL	-5309-07055	America/Punta_Arenas	Region of Magallanes
-CL	-2709-10926	Pacific/Easter	Easter Island
-CN	+3114+12128	Asia/Shanghai	Beijing Time
-CN	+4348+08735	Asia/Urumqi	Xinjiang Time
-CO	+0436-07405	America/Bogota
-CR	+0956-08405	America/Costa_Rica
-CU	+2308-08222	America/Havana
-CV	+1455-02331	Atlantic/Cape_Verde
-CW,AW,BQ,SX	+1211-06900	America/Curacao
-CX	-1025+10543	Indian/Christmas
-CY	+3510+03322	Asia/Nicosia	Cyprus (most areas)
-CY	+3507+03357	Asia/Famagusta	Northern Cyprus
-CZ,SK	+5005+01426	Europe/Prague
-DE	+5230+01322	Europe/Berlin	Germany (most areas)
-DK	+5540+01235	Europe/Copenhagen
-DO	+1828-06954	America/Santo_Domingo
-DZ	+3647+00303	Africa/Algiers
-EC	-0210-07950	America/Guayaquil	Ecuador (mainland)
-EC	-0054-08936	Pacific/Galapagos	Galápagos Islands
-EE	+5925+02445	Europe/Tallinn
-EG	+3003+03115	Africa/Cairo
-EH	+2709-01312	Africa/El_Aaiun
-ES	+4024-00341	Europe/Madrid	Spain (mainland)
-ES	+3553-00519	Africa/Ceuta	Ceuta, Melilla
-ES	+2806-01524	Atlantic/Canary	Canary Islands
-FI,AX	+6010+02458	Europe/Helsinki
-FJ	-1808+17825	Pacific/Fiji
-FK	-5142-05751	Atlantic/Stanley
-FM	+0725+15147	Pacific/Chuuk	Chuuk/Truk, Yap
-FM	+0658+15813	Pacific/Pohnpei	Pohnpei/Ponape
-FM	+0519+16259	Pacific/Kosrae	Kosrae
-FO	+6201-00646	Atlantic/Faroe
-FR	+4852+00220	Europe/Paris
-GB,GG,IM,JE	+513030-0000731	Europe/London
-GE	+4143+04449	Asia/Tbilisi
-GF	+0456-05220	America/Cayenne
-GH	+0533-00013	Africa/Accra
-GI	+3608-00521	Europe/Gibraltar
-GL	+6411-05144	America/Nuuk	Greenland (most areas)
-GL	+7646-01840	America/Danmarkshavn	National Park (east coast)
-GL	+7029-02158	America/Scoresbysund	Scoresbysund/Ittoqqortoormiit
-GL	+7634-06847	America/Thule	Thule/Pituffik
-GR	+3758+02343	Europe/Athens
-GS	-5416-03632	Atlantic/South_Georgia
-GT	+1438-09031	America/Guatemala
-GU,MP	+1328+14445	Pacific/Guam
-GW	+1151-01535	Africa/Bissau
-GY	+0648-05810	America/Guyana
-HK	+2217+11409	Asia/Hong_Kong
-HN	+1406-08713	America/Tegucigalpa
-HT	+1832-07220	America/Port-au-Prince
-HU	+4730+01905	Europe/Budapest
-ID	-0610+10648	Asia/Jakarta	Java, Sumatra
-ID	-0002+10920	Asia/Pontianak	Borneo (west, central)
-ID	-0507+11924	Asia/Makassar	Borneo (east, south); Sulawesi/Celebes, Bali, Nusa Tengarra; Timor (west)
-ID	-0232+14042	Asia/Jayapura	New Guinea (West Papua / Irian Jaya); Malukus/Moluccas
-IE	+5320-00615	Europe/Dublin
-IL	+314650+0351326	Asia/Jerusalem
-IN	+2232+08822	Asia/Kolkata
-IO	-0720+07225	Indian/Chagos
-IQ	+3321+04425	Asia/Baghdad
-IR	+3540+05126	Asia/Tehran
-IS	+6409-02151	Atlantic/Reykjavik
-IT,SM,VA	+4154+01229	Europe/Rome
-JM	+175805-0764736	America/Jamaica
-JO	+3157+03556	Asia/Amman
-JP	+353916+1394441	Asia/Tokyo
-KE,DJ,ER,ET,KM,MG,SO,TZ,UG,YT	-0117+03649	Africa/Nairobi
-KG	+4254+07436	Asia/Bishkek
-KI	+0125+17300	Pacific/Tarawa	Gilbert Islands
-KI	-0308-17105	Pacific/Enderbury	Phoenix Islands
-KI	+0152-15720	Pacific/Kiritimati	Line Islands
-KP	+3901+12545	Asia/Pyongyang
-KR	+3733+12658	Asia/Seoul
-KZ	+4315+07657	Asia/Almaty	Kazakhstan (most areas)
-KZ	+4448+06528	Asia/Qyzylorda	Qyzylorda/Kyzylorda/Kzyl-Orda
-KZ	+5312+06337	Asia/Qostanay	Qostanay/Kostanay/Kustanay
-KZ	+5017+05710	Asia/Aqtobe	Aqtöbe/Aktobe
-KZ	+4431+05016	Asia/Aqtau	Mangghystaū/Mankistau
-KZ	+4707+05156	Asia/Atyrau	Atyraū/Atirau/Gur'yev
-KZ	+5113+05121	Asia/Oral	West Kazakhstan
-LB	+3353+03530	Asia/Beirut
-LK	+0656+07951	Asia/Colombo
-LR	+0618-01047	Africa/Monrovia
-LT	+5441+02519	Europe/Vilnius
-LU	+4936+00609	Europe/Luxembourg
-LV	+5657+02406	Europe/Riga
-LY	+3254+01311	Africa/Tripoli
-MA	+3339-00735	Africa/Casablanca
-MC	+4342+00723	Europe/Monaco
-MD	+4700+02850	Europe/Chisinau
-MH	+0709+17112	Pacific/Majuro	Marshall Islands (most areas)
-MH	+0905+16720	Pacific/Kwajalein	Kwajalein
-MM	+1647+09610	Asia/Yangon
-MN	+4755+10653	Asia/Ulaanbaatar	Mongolia (most areas)
-MN	+4801+09139	Asia/Hovd	Bayan-Ölgii, Govi-Altai, Hovd, Uvs, Zavkhan
-MN	+4804+11430	Asia/Choibalsan	Dornod, Sükhbaatar
-MO	+221150+1133230	Asia/Macau
-MQ	+1436-06105	America/Martinique
-MT	+3554+01431	Europe/Malta
-MU	-2010+05730	Indian/Mauritius
-MV	+0410+07330	Indian/Maldives
-MX	+1924-09909	America/Mexico_City	Central Time
-MX	+2105-08646	America/Cancun	Eastern Standard Time - Quintana Roo
-MX	+2058-08937	America/Merida	Central Time - Campeche, Yucatán
-MX	+2540-10019	America/Monterrey	Central Time - Durango; Coahuila, Nuevo León, Tamaulipas (most areas)
-MX	+2550-09730	America/Matamoros	Central Time US - Coahuila, Nuevo León, Tamaulipas (US border)
-MX	+2313-10625	America/Mazatlan	Mountain Time - Baja California Sur, Nayarit, Sinaloa
-MX	+2838-10605	America/Chihuahua	Mountain Time - Chihuahua (most areas)
-MX	+2934-10425	America/Ojinaga	Mountain Time US - Chihuahua (US border)
-MX	+2904-11058	America/Hermosillo	Mountain Standard Time - Sonora
-MX	+3232-11701	America/Tijuana	Pacific Time US - Baja California
-MX	+2048-10515	America/Bahia_Banderas	Central Time - Bahía de Banderas
-MY	+0310+10142	Asia/Kuala_Lumpur	Malaysia (peninsula)
-MY	+0133+11020	Asia/Kuching	Sabah, Sarawak
-MZ,BI,BW,CD,MW,RW,ZM,ZW	-2558+03235	Africa/Maputo	Central Africa Time
-NA	-2234+01706	Africa/Windhoek
-NC	-2216+16627	Pacific/Noumea
-NF	-2903+16758	Pacific/Norfolk
-NG,AO,BJ,CD,CF,CG,CM,GA,GQ,NE	+0627+00324	Africa/Lagos	West Africa Time
-NI	+1209-08617	America/Managua
-NL	+5222+00454	Europe/Amsterdam
-NO,SJ	+5955+01045	Europe/Oslo
-NP	+2743+08519	Asia/Kathmandu
-NR	-0031+16655	Pacific/Nauru
-NU	-1901-16955	Pacific/Niue
-NZ,AQ	-3652+17446	Pacific/Auckland	New Zealand time
-NZ	-4357-17633	Pacific/Chatham	Chatham Islands
-PA,KY	+0858-07932	America/Panama
-PE	-1203-07703	America/Lima
-PF	-1732-14934	Pacific/Tahiti	Society Islands
-PF	-0900-13930	Pacific/Marquesas	Marquesas Islands
-PF	-2308-13457	Pacific/Gambier	Gambier Islands
-PG	-0930+14710	Pacific/Port_Moresby	Papua New Guinea (most areas)
-PG	-0613+15534	Pacific/Bougainville	Bougainville
-PH	+1435+12100	Asia/Manila
-PK	+2452+06703	Asia/Karachi
-PL	+5215+02100	Europe/Warsaw
-PM	+4703-05620	America/Miquelon
-PN	-2504-13005	Pacific/Pitcairn
-PR	+182806-0660622	America/Puerto_Rico
-PS	+3130+03428	Asia/Gaza	Gaza Strip
-PS	+313200+0350542	Asia/Hebron	West Bank
-PT	+3843-00908	Europe/Lisbon	Portugal (mainland)
-PT	+3238-01654	Atlantic/Madeira	Madeira Islands
-PT	+3744-02540	Atlantic/Azores	Azores
-PW	+0720+13429	Pacific/Palau
-PY	-2516-05740	America/Asuncion
-QA,BH	+2517+05132	Asia/Qatar
-RE,TF	-2052+05528	Indian/Reunion	Réunion, Crozet, Scattered Islands
-RO	+4426+02606	Europe/Bucharest
-RS,BA,HR,ME,MK,SI	+4450+02030	Europe/Belgrade
-RU	+5443+02030	Europe/Kaliningrad	MSK-01 - Kaliningrad
-RU	+554521+0373704	Europe/Moscow	MSK+00 - Moscow area
-# Mention RU and UA alphabetically.  See "territorial claims" above.
-RU,UA	+4457+03406	Europe/Simferopol	Crimea
-RU	+5836+04939	Europe/Kirov	MSK+00 - Kirov
-RU	+4621+04803	Europe/Astrakhan	MSK+01 - Astrakhan
-RU	+4844+04425	Europe/Volgograd	MSK+01 - Volgograd
-RU	+5134+04602	Europe/Saratov	MSK+01 - Saratov
-RU	+5420+04824	Europe/Ulyanovsk	MSK+01 - Ulyanovsk
-RU	+5312+05009	Europe/Samara	MSK+01 - Samara, Udmurtia
-RU	+5651+06036	Asia/Yekaterinburg	MSK+02 - Urals
-RU	+5500+07324	Asia/Omsk	MSK+03 - Omsk
-RU	+5502+08255	Asia/Novosibirsk	MSK+04 - Novosibirsk
-RU	+5322+08345	Asia/Barnaul	MSK+04 - Altai
-RU	+5630+08458	Asia/Tomsk	MSK+04 - Tomsk
-RU	+5345+08707	Asia/Novokuznetsk	MSK+04 - Kemerovo
-RU	+5601+09250	Asia/Krasnoyarsk	MSK+04 - Krasnoyarsk area
-RU	+5216+10420	Asia/Irkutsk	MSK+05 - Irkutsk, Buryatia
-RU	+5203+11328	Asia/Chita	MSK+06 - Zabaykalsky
-RU	+6200+12940	Asia/Yakutsk	MSK+06 - Lena River
-RU	+623923+1353314	Asia/Khandyga	MSK+06 - Tomponsky, Ust-Maysky
-RU	+4310+13156	Asia/Vladivostok	MSK+07 - Amur River
-RU	+643337+1431336	Asia/Ust-Nera	MSK+07 - Oymyakonsky
-RU	+5934+15048	Asia/Magadan	MSK+08 - Magadan
-RU	+4658+14242	Asia/Sakhalin	MSK+08 - Sakhalin Island
-RU	+6728+15343	Asia/Srednekolymsk	MSK+08 - Sakha (E); North Kuril Is
-RU	+5301+15839	Asia/Kamchatka	MSK+09 - Kamchatka
-RU	+6445+17729	Asia/Anadyr	MSK+09 - Bering Sea
-SA,KW,YE	+2438+04643	Asia/Riyadh
-SB	-0932+16012	Pacific/Guadalcanal
-SC	-0440+05528	Indian/Mahe
-SD	+1536+03232	Africa/Khartoum
-SE	+5920+01803	Europe/Stockholm
-SG	+0117+10351	Asia/Singapore
-SR	+0550-05510	America/Paramaribo
-SS	+0451+03137	Africa/Juba
-ST	+0020+00644	Africa/Sao_Tome
-SV	+1342-08912	America/El_Salvador
-SY	+3330+03618	Asia/Damascus
-TC	+2128-07108	America/Grand_Turk
-TD	+1207+01503	Africa/Ndjamena
-TF	-492110+0701303	Indian/Kerguelen	Kerguelen, St Paul Island, Amsterdam Island
-TH,KH,LA,VN	+1345+10031	Asia/Bangkok	Indochina (most areas)
-TJ	+3835+06848	Asia/Dushanbe
-TK	-0922-17114	Pacific/Fakaofo
-TL	-0833+12535	Asia/Dili
-TM	+3757+05823	Asia/Ashgabat
-TN	+3648+01011	Africa/Tunis
-TO	-2110-17510	Pacific/Tongatapu
-TR	+4101+02858	Europe/Istanbul
-TT,AG,AI,BL,DM,GD,GP,KN,LC,MF,MS,VC,VG,VI	+1039-06131	America/Port_of_Spain
-TV	-0831+17913	Pacific/Funafuti
-TW	+2503+12130	Asia/Taipei
-UA	+5026+03031	Europe/Kiev	Ukraine (most areas)
-UA	+4837+02218	Europe/Uzhgorod	Transcarpathia
-UA	+4750+03510	Europe/Zaporozhye	Zaporozhye and east Lugansk
-UM	+1917+16637	Pacific/Wake	Wake Island
-US	+404251-0740023	America/New_York	Eastern (most areas)
-US	+421953-0830245	America/Detroit	Eastern - MI (most areas)
-US	+381515-0854534	America/Kentucky/Louisville	Eastern - KY (Louisville area)
-US	+364947-0845057	America/Kentucky/Monticello	Eastern - KY (Wayne)
-US	+394606-0860929	America/Indiana/Indianapolis	Eastern - IN (most areas)
-US	+384038-0873143	America/Indiana/Vincennes	Eastern - IN (Da, Du, K, Mn)
-US	+410305-0863611	America/Indiana/Winamac	Eastern - IN (Pulaski)
-US	+382232-0862041	America/Indiana/Marengo	Eastern - IN (Crawford)
-US	+382931-0871643	America/Indiana/Petersburg	Eastern - IN (Pike)
-US	+384452-0850402	America/Indiana/Vevay	Eastern - IN (Switzerland)
-US	+415100-0873900	America/Chicago	Central (most areas)
-US	+375711-0864541	America/Indiana/Tell_City	Central - IN (Perry)
-US	+411745-0863730	America/Indiana/Knox	Central - IN (Starke)
-US	+450628-0873651	America/Menominee	Central - MI (Wisconsin border)
-US	+470659-1011757	America/North_Dakota/Center	Central - ND (Oliver)
-US	+465042-1012439	America/North_Dakota/New_Salem	Central - ND (Morton rural)
-US	+471551-1014640	America/North_Dakota/Beulah	Central - ND (Mercer)
-US	+394421-1045903	America/Denver	Mountain (most areas)
-US	+433649-1161209	America/Boise	Mountain - ID (south); OR (east)
-US	+332654-1120424	America/Phoenix	MST - Arizona (except Navajo)
-US	+340308-1181434	America/Los_Angeles	Pacific
-US	+611305-1495401	America/Anchorage	Alaska (most areas)
-US	+581807-1342511	America/Juneau	Alaska - Juneau area
-US	+571035-1351807	America/Sitka	Alaska - Sitka area
-US	+550737-1313435	America/Metlakatla	Alaska - Annette Island
-US	+593249-1394338	America/Yakutat	Alaska - Yakutat
-US	+643004-1652423	America/Nome	Alaska (west)
-US	+515248-1763929	America/Adak	Aleutian Islands
-US,UM	+211825-1575130	Pacific/Honolulu	Hawaii
-UY	-345433-0561245	America/Montevideo
-UZ	+3940+06648	Asia/Samarkand	Uzbekistan (west)
-UZ	+4120+06918	Asia/Tashkent	Uzbekistan (east)
-VE	+1030-06656	America/Caracas
-VN	+1045+10640	Asia/Ho_Chi_Minh	Vietnam (south)
-VU	-1740+16825	Pacific/Efate
-WF	-1318-17610	Pacific/Wallis
-WS	-1350-17144	Pacific/Apia
-ZA,LS,SZ	-2615+02800	Africa/Johannesburg