Import tzdata2024a from https://github.com/JodaOrg/global-tz/releases/download/2024agtz/tzdata2024agtz.tar.gz

Summary of changes in tzdata2024a (2024-02-01 09:28:56 -0800):
* Kazakhstan unifies on UTC+5.
* Palestine summer time begins a week later than previously predicted
in 2024 and 2025.
* Historic corrections for Asia/Ho_Chi_Minh (1955) America/Toronto (1947-9)
and America/Miquelon (1911).

Import tzdata2023d from https://github.com/JodaOrg/global-tz/releases/download/2023dgtz/tzdata2023dgtz.tar.gz

Summary of changes in tzdata2023d (2023-12-21 20:02:24 -0800):
* Ittoqqortoormiit, Greenland (America/Scoresbysund) joins most of
the rest of Greenland's timekeeping practice on 2024-03-31, by
changing its time zone from -01/+00 to -02/-01.
* Fix predictions for DST transitions in Palestine in 2072-2075,
correcting a typo introduced in 2023a.
* Various fixes to zones for several Antarctic bases.

Import tzdata2023a from https://github.com/JodaOrg/global-tz/releases/download/2023agtz/tzdata2023agtz.tar.gz

Summary of changes in tzdata2023a (2023-03-22 12:39:33 -0700):
* Starting in 2023, Egypt will observe DST from April's last Friday
through October's last Thursday.
* In 2023 Morocco's summer time start transition after Ramadan
will occur April 23, not April 30.
* This year Palestine will delay the start of summer time from
March 25 to April 29 due to Ramadan.
* Much of Greenland, represented by America/Nuuk, will continue to
observe DST using European Union rules.
* America/Yellowknife has changed from a Zone to a backward
compatibility Link, as it no longer differs from America/Edmonton
since 1970.
* Changes to commentary.

branches: 1.1.1.30.2;
Import tzdata2022g from https://github.com/JodaOrg/global-tz/releases/download/2022ggtz/tzdata2022ggtz.tar.gz

Summary of changes in tzdata2022g (2022-11-29 08:58:31 -0800):
* In the Mexican state of Chihuahua, the border strip near the US
will change to agree with nearby US locations on 2022-11-30.
* Much of Greenland, represented by America/Nuuk, stops observing
winter time after March 2023, so its daylight saving time becomes
standard time.
* Changes for pre-1996 northern Canada (thanks to Chris Walton):
* Merge America/Iqaluit and America/Pangnirtung into the former,
with a backward compatibility link for the latter name.
* Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and
Yellowknife did not observe DST in 1965, and did observe DST
from 1972 through 1979.
* Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28.
* Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00.
* Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time),
not 24:00 local time.

Zones added by this update:
America/Ciudad_Juarez

Import tzdata2022f from
https://github.com/JodaOrg/global-tz/releases/download/2022fgtz/tzdata2022fgtz.tar.gz

Summary of changes in tzdata2022f (2022-10-28 18:04:57 -0700):
* Mexico will no longer observe DST after 2022, except for areas
near the US border that continue to observe US DST rules.
* Fiji will not observe DST in 2022/3.
* Simplify four Ontario zones, as most of the post-1970 differences
seem to have been imaginary.

Import tzdata2022d from https://github.com/JodaOrg/global-tz/releases/download/2022dgtz/tzdata2022dgtz.tar.gz

Summary of changes in tzdata2022d (2022-09-23 12:02:57 -0700):
* Palestine now springs forward and falls back at 02:00 on the
first Saturday on or after March 24 and October 24, respectively.
* Simplify three Ukraine zones to one, since the post-1970
differences seem to have been imaginary.

This is an update from 2022b to 2022d, there were no tzdata changes in 2022c

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2023d from https://github.com/JodaOrg/global-tz/releases/download/2023dgtz/tzdata2023dgtz.tar.gz

Summary of changes in tzdata2023d (2023-12-21 20:02:24 -0800):
* Ittoqqortoormiit, Greenland (America/Scoresbysund) joins most of
the rest of Greenland's timekeeping practice on 2024-03-31, by
changing its time zone from -01/+00 to -02/-01.
* Fix predictions for DST transitions in Palestine in 2072-2075,
correcting a typo introduced in 2023a.
* Various fixes to zones for several Antarctic bases.

Import tzdata2023a from https://github.com/JodaOrg/global-tz/releases/download/2023agtz/tzdata2023agtz.tar.gz

Summary of changes in tzdata2023a (2023-03-22 12:39:33 -0700):
* Starting in 2023, Egypt will observe DST from April's last Friday
through October's last Thursday.
* In 2023 Morocco's summer time start transition after Ramadan
will occur April 23, not April 30.
* This year Palestine will delay the start of summer time from
March 25 to April 29 due to Ramadan.
* Much of Greenland, represented by America/Nuuk, will continue to
observe DST using European Union rules.
* America/Yellowknife has changed from a Zone to a backward
compatibility Link, as it no longer differs from America/Edmonton
since 1970.
* Changes to commentary.

branches: 1.1.1.30.2;
Import tzdata2022g from https://github.com/JodaOrg/global-tz/releases/download/2022ggtz/tzdata2022ggtz.tar.gz

Summary of changes in tzdata2022g (2022-11-29 08:58:31 -0800):
* In the Mexican state of Chihuahua, the border strip near the US
will change to agree with nearby US locations on 2022-11-30.
* Much of Greenland, represented by America/Nuuk, stops observing
winter time after March 2023, so its daylight saving time becomes
standard time.
* Changes for pre-1996 northern Canada (thanks to Chris Walton):
* Merge America/Iqaluit and America/Pangnirtung into the former,
with a backward compatibility link for the latter name.
* Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and
Yellowknife did not observe DST in 1965, and did observe DST
from 1972 through 1979.
* Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28.
* Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00.
* Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time),
not 24:00 local time.

Zones added by this update:
America/Ciudad_Juarez

Import tzdata2022f from
https://github.com/JodaOrg/global-tz/releases/download/2022fgtz/tzdata2022fgtz.tar.gz

Summary of changes in tzdata2022f (2022-10-28 18:04:57 -0700):
* Mexico will no longer observe DST after 2022, except for areas
near the US border that continue to observe US DST rules.
* Fiji will not observe DST in 2022/3.
* Simplify four Ontario zones, as most of the post-1970 differences
seem to have been imaginary.

Import tzdata2022d from https://github.com/JodaOrg/global-tz/releases/download/2022dgtz/tzdata2022dgtz.tar.gz

Summary of changes in tzdata2022d (2022-09-23 12:02:57 -0700):
* Palestine now springs forward and falls back at 02:00 on the
first Saturday on or after March 24 and October 24, respectively.
* Simplify three Ukraine zones to one, since the post-1970
differences seem to have been imaginary.

This is an update from 2022b to 2022d, there were no tzdata changes in 2022c

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2023a from https://github.com/JodaOrg/global-tz/releases/download/2023agtz/tzdata2023agtz.tar.gz

Summary of changes in tzdata2023a (2023-03-22 12:39:33 -0700):
* Starting in 2023, Egypt will observe DST from April's last Friday
through October's last Thursday.
* In 2023 Morocco's summer time start transition after Ramadan
will occur April 23, not April 30.
* This year Palestine will delay the start of summer time from
March 25 to April 29 due to Ramadan.
* Much of Greenland, represented by America/Nuuk, will continue to
observe DST using European Union rules.
* America/Yellowknife has changed from a Zone to a backward
compatibility Link, as it no longer differs from America/Edmonton
since 1970.
* Changes to commentary.

Import tzdata2022g from https://github.com/JodaOrg/global-tz/releases/download/2022ggtz/tzdata2022ggtz.tar.gz

Summary of changes in tzdata2022g (2022-11-29 08:58:31 -0800):
* In the Mexican state of Chihuahua, the border strip near the US
will change to agree with nearby US locations on 2022-11-30.
* Much of Greenland, represented by America/Nuuk, stops observing
winter time after March 2023, so its daylight saving time becomes
standard time.
* Changes for pre-1996 northern Canada (thanks to Chris Walton):
* Merge America/Iqaluit and America/Pangnirtung into the former,
with a backward compatibility link for the latter name.
* Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and
Yellowknife did not observe DST in 1965, and did observe DST
from 1972 through 1979.
* Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28.
* Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00.
* Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time),
not 24:00 local time.

Zones added by this update:
America/Ciudad_Juarez

Import tzdata2022f from
https://github.com/JodaOrg/global-tz/releases/download/2022fgtz/tzdata2022fgtz.tar.gz

Summary of changes in tzdata2022f (2022-10-28 18:04:57 -0700):
* Mexico will no longer observe DST after 2022, except for areas
near the US border that continue to observe US DST rules.
* Fiji will not observe DST in 2022/3.
* Simplify four Ontario zones, as most of the post-1970 differences
seem to have been imaginary.

Import tzdata2022d from https://github.com/JodaOrg/global-tz/releases/download/2022dgtz/tzdata2022dgtz.tar.gz

Summary of changes in tzdata2022d (2022-09-23 12:02:57 -0700):
* Palestine now springs forward and falls back at 02:00 on the
first Saturday on or after March 24 and October 24, respectively.
* Simplify three Ukraine zones to one, since the post-1970
differences seem to have been imaginary.

This is an update from 2022b to 2022d, there were no tzdata changes in 2022c

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2022g from https://github.com/JodaOrg/global-tz/releases/download/2022ggtz/tzdata2022ggtz.tar.gz

Summary of changes in tzdata2022g (2022-11-29 08:58:31 -0800):
* In the Mexican state of Chihuahua, the border strip near the US
will change to agree with nearby US locations on 2022-11-30.
* Much of Greenland, represented by America/Nuuk, stops observing
winter time after March 2023, so its daylight saving time becomes
standard time.
* Changes for pre-1996 northern Canada (thanks to Chris Walton):
* Merge America/Iqaluit and America/Pangnirtung into the former,
with a backward compatibility link for the latter name.
* Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and
Yellowknife did not observe DST in 1965, and did observe DST
from 1972 through 1979.
* Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28.
* Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00.
* Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time),
not 24:00 local time.

Zones added by this update:
America/Ciudad_Juarez

Import tzdata2022f from
https://github.com/JodaOrg/global-tz/releases/download/2022fgtz/tzdata2022fgtz.tar.gz

Summary of changes in tzdata2022f (2022-10-28 18:04:57 -0700):
* Mexico will no longer observe DST after 2022, except for areas
near the US border that continue to observe US DST rules.
* Fiji will not observe DST in 2022/3.
* Simplify four Ontario zones, as most of the post-1970 differences
seem to have been imaginary.

Import tzdata2022d from https://github.com/JodaOrg/global-tz/releases/download/2022dgtz/tzdata2022dgtz.tar.gz

Summary of changes in tzdata2022d (2022-09-23 12:02:57 -0700):
* Palestine now springs forward and falls back at 02:00 on the
first Saturday on or after March 24 and October 24, respectively.
* Simplify three Ukraine zones to one, since the post-1970
differences seem to have been imaginary.

This is an update from 2022b to 2022d, there were no tzdata changes in 2022c

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2022f from
https://github.com/JodaOrg/global-tz/releases/download/2022fgtz/tzdata2022fgtz.tar.gz

Summary of changes in tzdata2022f (2022-10-28 18:04:57 -0700):
* Mexico will no longer observe DST after 2022, except for areas
near the US border that continue to observe US DST rules.
* Fiji will not observe DST in 2022/3.
* Simplify four Ontario zones, as most of the post-1970 differences
seem to have been imaginary.

Import tzdata2022d from https://github.com/JodaOrg/global-tz/releases/download/2022dgtz/tzdata2022dgtz.tar.gz

Summary of changes in tzdata2022d (2022-09-23 12:02:57 -0700):
* Palestine now springs forward and falls back at 02:00 on the
first Saturday on or after March 24 and October 24, respectively.
* Simplify three Ukraine zones to one, since the post-1970
differences seem to have been imaginary.

This is an update from 2022b to 2022d, there were no tzdata changes in 2022c

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2022d from https://github.com/JodaOrg/global-tz/releases/download/2022dgtz/tzdata2022dgtz.tar.gz

Summary of changes in tzdata2022d (2022-09-23 12:02:57 -0700):
* Palestine now springs forward and falls back at 02:00 on the
first Saturday on or after March 24 and October 24, respectively.
* Simplify three Ukraine zones to one, since the post-1970
differences seem to have been imaginary.

This is an update from 2022b to 2022d, there were no tzdata changes in 2022c

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2022c from https://github.com/JodaOrg/global-tz/releases/download//2022bgtz/tzdata2022bgtz.tar.gz

Summary of changes in tzdata2022c (2022-08-15 17:47:18 -0700):
* None.

Summary of changes in tzdata2022b (2022-08-10 15:38:32 -0700):
* Chile's 2022 DST start is delayed from September 4 to September 11.
* Iran plans to stop observing DST permanently, after it falls back
on 2022-09-21.
* From fall 1994 through fall 1995, Shanks wrote that Crimea's
DST transitions were at 02:00 standard time, not at 00:00.
* Iran adopted standard time in 1935, not 1946.
* Chile's observance of -04 from 1946-08-29 through 1947-03-31 was
considered DST, not standard time.
* Some old, small clock transitions have been removed, as people at
the time did not change their clocks.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.

Import tzdata2014g from ftp://ftp.iana.org/tz/releases/tzdata2014g.tar.gz

Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
* A new file 'backzone' contains data which may appeal to
connoisseurs of old time stamps, although it is out of scope for
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6;
Import tzdata2014f from ftp://ftp.iana.org/tz/releases/tzdata2014f.tar.gz
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.

NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.

This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.

Import tzdata2022agtz
not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)

Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.

Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.

Import tzdata2021a from ftp://ftp.iana.org/tz/releases/tzdata2021a.tar.gz

Summary of changes in tzdata2021a (2021-01-24 10:54:57 -0800):

South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

Import tzdata2020f from ftp://ftp.iana.org/tz/releases/tzdata2020f.tar.gz

Release 2020f - 2020-12-29 00:17:46 -0800

No changes to tzdata, just to a part of the build procedure
not used on NetBSD

Release 2020e - 2020-12-22 15:14:34 -0800

Volgograd switched to Moscow time on 2020-12-27 at 02:00.

Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu

Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.

To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.

Import tzdata2020b from ftp://ftp.iana.org/tz/releases/tzdata2020b.tar.gz

Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):

Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.

Import tzdata2020a from ftp://ftp.iana.org/tz/releases/tzdata2020a.tar.gz

Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):

Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).

Import tzdata2019c from ftp://ftp.iana.org/tz/releases/tzdata2019c.tar.gz

Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST

Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".

Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):

Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).

Historic updates: Honk Kong (1941 - 1947), Italy (1866).

branches: 1.1.1.20.2;
Import tzdata2019a from ftp://ftp.iana.org/tz/releases/tzdata2019a.tar.gz

Release 20198 - 2019-03-25 22:01:33 -0700

Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.

Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).

Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".

Import tzdata2018i from ftp://ftp.iana.org/tz/releases/tzdata2018i.tar.gz

Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):

Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.

Import tzdata2018h from ftp://ftp.iana.org/tz/releases/tzdata2018h.tar.gz

Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla, Alaska observes PST this winter only.

Add predictions for Iran from 2038 through 2090.

Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)

Import tzdata2018g from ftp://ftp.iana.org/tz/releases/tzdata2018g.tar.gz

Summary of changes in tzdata2018g (2018-10-26 22:22:45 -0700):

Morocco switches to permanent +01 on 2018-10-27.

Import tzdata2018f from ftp://ftp.iana.org/tz/releases/tzdata2018f.tar.gz

Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.

Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.

branches: 1.1.1.15.2;
Import tzdata2018e from ftp://ftp.iana.org/tz/releases/tzdata2018e.tar.gz

Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):

News for the tz database

Release 2018e - 2018-05-01 23:42:51 -0700

North Korea switches back to +09 on 2018-05-05 (tomorrow!)

Import tzdata2018d from ftp://ftp.iana.org/tz/releases/tzdata2018d.tar.gz

Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):

In 2018, Palestine starts DST on March 24 (today!), not March 31

Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.

Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).

branches: 1.1.1.13.2;
Import tzdata2018c from ftp://ftp.iana.org/tz/releases/tzdata2018c.tar.gz

Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):

2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...

The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).

Briefly:

Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.

Brazil's DST will now start on November's first Sunday.

Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)

Changes to past and future time stamps

Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)

Changes to future time stamps

Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)

Changes to past time stamps

Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)

A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)

The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

branches: 1.1.1.11.4;
Import tzdata2017b from ftp://ftp.iana.org/tz/releases/tzdata2017b.tar.gz

Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)

Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.
Use "MMT" to abbreviate Liberia's time zone before 1972,
as "-004430" (tzdata2016a) is one byte over the POSIX limit.

Import tzdata2017a from ftp://ftp.iana.org/tz/releases/tzdata2017a.tar.gz

Summary of changes in tzdata2017a (2017-02-28 00:05:36 -0800):

Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia
discontinues DST.

Changes to future time stamps

Mongolia no longer observes DST.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.

Changes to past time stamps

Fix many entries for historical time stamps for Europe/Madrid
before 1979, to agree with tables compiled by Pere Planesas of the
National Astronomical Observatory of Spain. As a side effect,
this changes some time stamps for Africa/Ceuta before 1929, which
are probably guesswork anyway.

Ecuador observed DST from 1992-11-28 to 1993-02-05.

Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.

Changes to past and future time zone abbreviations

Switch to numeric time zone abbreviations for South America, as
part of the ongoing project of removing invented abbreviations.

For Alaska time from 1900 through 1967, instead of "CAT" use the
abbreviation "AST", the abbreviation commonly used at the time
(Atlantic Standard Time had not been standardized yet). Use "AWT"
and "APT" instead of the invented abbreviations "CAWT" and "CAPT".

Use "CST" and "CDT" instead of invented abbreviations for Macau
before 1999 and Taiwan before 1938, and use "JST" instead of the
invented abbreviation "JCST" for Japan and Korea before 1938.

Change to database entry category

Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

branches: 1.1.1.9.2;
Import tzdata2016j from ftp://ftp.iana.org/tz/releases/tzdata2016j.tar.gz

Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):

Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.

New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.

Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

Import tzdata2016f from ftp://ftp.iana.org/tz/releases/tzdata2016f.tar.gz

Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.

Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.

branches: 1.1.1.6.2;
Import tzdata2015f from ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz

Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.

Import tzdata2015e from http://www.iana.org/time-zones/repository/releases/tzdata2015e.tar.gz

Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of ��land Islands, C��te d'Ivoire, and R��union.

Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.

Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.

Import tzdata2014j from ftp://ftp.iana.org/tz/releases/tzdata2014j.tar.gz

Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.

Import tzdata2014h from ftp://ftp.iana.org/tz/releases/tzdata2014h.tar.gz

Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps. As usual,
these changes affect UTC offsets in pre-1970 time stamps only.
Their old contents have been moved to the 'backzone' file.
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.