More tzdata2023a updates (these are files we don't use for anything normally)

Merge tzdata2022c

Merge tzdata2022agtz

Update to tzdata2021e (with much of 2020b still omitted)
This includes 2021c (no changes) 2021d (Fiji change) 2021e (Palestine)

Fiji has cancelled summer time changes for 2021/2 summer. Currently
a

Update to tzdata2021e (with much of 2020b still omitted)
This includes 2021c (no changes) 2021d (Fiji change) 2021e (Palestine)

Fiji has cancelled summer time changes for 2021/2 summer. Currently
assume it will be back in 2022/3.

Palestine ends summer time October 29 01:00 (rather than Oct 30).

Pacific/Enderbury is renamed to Pacific/Kanton and updated for
historic data (Pacific/Enderbury retained as a link for compat).

Historic timestamp fixes for Niue, Rarotonga, Tongatapu

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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 N

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.

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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 2

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.

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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 2020-05-2

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).

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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 Isl

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).

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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.

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".

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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 fro

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)

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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 dat

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.

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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)

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.

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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 switc

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.

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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 Mon

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.

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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

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)

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Import tzdata2016b from ftp://ftp.iana.org/tz/releases/tzdata2016b.tar.gz

Summary of changes in tzdata2016b (2016-03-12 17:30:14 -0800):
* New zones Europe/Astrakhan and Europe/Ulyanovsk for Astra

Import tzdata2016b from ftp://ftp.iana.org/tz/releases/tzdata2016b.tar.gz

Summary of changes in tzdata2016b (2016-03-12 17:30:14 -0800):
* New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on
2016-03-27 at 02:00 local time.
* As a trial of a new system that needs less information to be made up,
the new zones use numeric time zone abbreviations like "+04"
instead of invented abbreviations like "ASTT".
* Haiti will not observe DST in 2016.
* Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00.
* Europe/Chisinau observed DST during 1990, and switched from +04 to
+03 at 1990-05-06 02:00, instead of switching from +03 to +02.
* 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not
KUYT/KUYST.
* tzselect's diagnostics and checking, and checktab.awk's checking,
have been improved.
* tzcode now builds under MinGW.
* tzselect now tests Julian-date TZ settings more accurately.
* Comments in zone tables have been improved.
* tzselect again limits its menu comments so that menus fit on a
24x80 alphanumeric display.
* A new web page tz-how-to.html.
* In the Theory file, the description of possible time zone abbreviations in
tzdata has been cleaned up, as the old description was unclear and
inconsistent.

Summary of changes in tzdata2016a (2016-01-26 23:28:02 -0800):
* America/Cayman will not observe daylight saving this year after all.
* Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
* Asia/Tehran now has DST predictions for the year 2038 and later,
to be March 21 00:00 to September 21 00:00.
* America/Metlakatla switched from PST all year to AKST/AKDT on
2015-11-01 at 02:00.
* America/Santa_Isabel has been removed, and replaced with a
backward compatibility link to America/Tijuana.
* Asia/Karachi's two transition times in 2002 were off by a minute.
* Changes affecting documentation and commentary.

Summary of changes in tzdata2015g (2015-10-01 00:39:51 -0700):
* Turkey's 2015 fall-back transition is scheduled for Nov.
* Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time.
* Fiji's 2016 fall-back transition is scheduled for January 17, not 24.
* Fort Nelson, British Columbia will not fall back on 2015-11-01.
* Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00.
* Changes affecting documentation.

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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

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.

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Import tzdata2015a from ftp://ftp.iana.org/tz/releases/tzdata2015a.tar.gz

Summary of changes in tzdata2015a (2015-01-29 22:35:20 -0800):
* The Mexican state of Quintana Roo, represented by America

Import tzdata2015a from ftp://ftp.iana.org/tz/releases/tzdata2015a.tar.gz

Summary of changes in tzdata2015a (2015-01-29 22:35:20 -0800):
* The Mexican state of Quintana Roo, represented by America/Cancun,
will shift from Central Time with DST to Eastern Time without DST
on 2015-02-01 at 02:00.
* Chile will not change clocks in April or thereafter; its new standard time
will be its old daylight saving time. This affects America/Santiago,
Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.)
* New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49.
* Iceland observed DST in 1919 and 1921, and its 1939 fallback
transition was Oct.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps.
* Changes affecting commentary.

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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

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.

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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

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.

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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

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.

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