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Update tzdata to 2023a
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‎NEWS.md

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# Version 2023.1
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Upstream version 2023a released 2023-03-22T19:39:33+00:00
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## Briefly:
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Egypt now uses DST again, from April through October. This year Morocco springs
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forward April 23, not April 30. Palestine delays the start of DST this year.
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Much of Greenland still uses DST from 2024 on. America/Yellowknife now links to
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America/Edmonton. tzselect can now use current time to help infer timezone. The
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code now defaults to C99 or later. Fix use of C23 attributes.
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## Changes to future timestamps
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Starting in 2023, Egypt will observe DST from April's last Friday through
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October's last Thursday. (Thanks to Ahmad ElDardiry.) Assume the transition
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times are 00:00 and 24:00, respectively.
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In 2023 Morocco's spring-forward transition after Ramadan will occur April 23,
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not April 30. (Thanks to Milamber.) Adjust predictions for future years
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accordingly. This affects predictions for 2023, 2031, 2038, and later years.
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This year Palestine will delay its spring forward from March 25 to April 29 due
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to Ramadan. (Thanks to Heba Hamad.) Make guesses for future Ramadans too.
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Much of Greenland, represented by America/Nuuk, will continue to observe DST
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using European Union rules. When combined with Greenland's decision not to
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change the clocks in fall 2023, America/Nuuk therefore changes from -03/-02 to
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-02/-01 effective 2023-10-29 at 01:00 UTC. (Thanks to Thomas M. Steenholdt.)
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This change from 2022g doesn't affect timestamps until 2024-03-30, and doesn't
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affect tm_isdst until 2023-03-25.
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## Changes to past timestamps
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America/Yellowknife has changed from a Zone to a backward compatibility Link, as
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it no longer differs from America/Edmonton since 1970. (Thanks to Almaz
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Mingaleev.) This affects some pre-1948 timestamps. The old data are now in
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'backzone'.
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## Changes to past time zone abbreviations
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When observing Moscow time, Europe/Kirov and Europe/Volgograd now use the
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abbreviations MSK/MSD instead of numeric abbreviations, for consistency with
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other timezones observing Moscow time.
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## Changes to commentary
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tz-link.html has a new section "Coordinating with governments and distributors".
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(Thanks to Neil Fuller for some of the text.)
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To improve tzselect diagnostics, zone1970.tab's comments column is now limited
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to countries that have multiple timezones.
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Note that leap seconds are planned to be discontinued by 2035.
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---
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# Version 2022.7
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Upstream version 2022g released 2022-11-29T16:58:31+00:00
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‎VERSION

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2022.7
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2023.1

‎news.d/2023a.md

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# Version 2023.1
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Upstream version 2023a released 2023-03-22T19:39:33+00:00
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## Briefly:
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Egypt now uses DST again, from April through October. This year Morocco springs
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forward April 23, not April 30. Palestine delays the start of DST this year.
8+
Much of Greenland still uses DST from 2024 on. America/Yellowknife now links to
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America/Edmonton. tzselect can now use current time to help infer timezone. The
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code now defaults to C99 or later. Fix use of C23 attributes.
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## Changes to future timestamps
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14+
Starting in 2023, Egypt will observe DST from April's last Friday through
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October's last Thursday. (Thanks to Ahmad ElDardiry.) Assume the transition
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times are 00:00 and 24:00, respectively.
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18+
In 2023 Morocco's spring-forward transition after Ramadan will occur April 23,
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not April 30. (Thanks to Milamber.) Adjust predictions for future years
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accordingly. This affects predictions for 2023, 2031, 2038, and later years.
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This year Palestine will delay its spring forward from March 25 to April 29 due
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to Ramadan. (Thanks to Heba Hamad.) Make guesses for future Ramadans too.
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Much of Greenland, represented by America/Nuuk, will continue to observe DST
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using European Union rules. When combined with Greenland's decision not to
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change the clocks in fall 2023, America/Nuuk therefore changes from -03/-02 to
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-02/-01 effective 2023-10-29 at 01:00 UTC. (Thanks to Thomas M. Steenholdt.)
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This change from 2022g doesn't affect timestamps until 2024-03-30, and doesn't
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affect tm_isdst until 2023-03-25.
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## Changes to past timestamps
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America/Yellowknife has changed from a Zone to a backward compatibility Link, as
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it no longer differs from America/Edmonton since 1970. (Thanks to Almaz
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Mingaleev.) This affects some pre-1948 timestamps. The old data are now in
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'backzone'.
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## Changes to past time zone abbreviations
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When observing Moscow time, Europe/Kirov and Europe/Volgograd now use the
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abbreviations MSK/MSD instead of numeric abbreviations, for consistency with
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other timezones observing Moscow time.
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## Changes to commentary
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tz-link.html has a new section "Coordinating with governments and distributors".
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(Thanks to Neil Fuller for some of the text.)
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To improve tzselect diagnostics, zone1970.tab's comments column is now limited
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to countries that have multiple timezones.
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Note that leap seconds are planned to be discontinued by 2035.

‎src/tzdata/__init__.py

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# IANA versions like 2020a are not valid PEP 440 identifiers; the recommended
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# way to translate the version is to use YYYY.n where `n` is a 0-based index.
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__version__ = "2022.7"
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__version__ = "2023.1"
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# This exposes the original IANA version number.
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IANA_VERSION = "2022g"
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IANA_VERSION = "2023a"

‎src/tzdata/zoneinfo/Africa/Cairo

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‎src/tzdata/zoneinfo/America/Godthab

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‎src/tzdata/zoneinfo/America/Nuuk

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‎src/tzdata/zoneinfo/Asia/Gaza

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‎src/tzdata/zoneinfo/Asia/Hebron

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‎src/tzdata/zoneinfo/Egypt

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‎src/tzdata/zoneinfo/Europe/Kirov

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‎src/tzdata/zoneinfo/iso3166.tab

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@@ -238,7 +238,7 @@ SY Syria
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SZ Eswatini (Swaziland)
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TC Turks & Caicos Is
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TD Chad
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TF French Southern Territories
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TF French S. Terr.
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TG Togo
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TH Thailand
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TJ Tajikistan

‎src/tzdata/zoneinfo/leapseconds

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# Any additional leap seconds will come after this.
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# This Expires line is commented out for now,
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# so that pre-2020a zic implementations do not reject this file.
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#Expires 2023 Jun 28 00:00:00
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#Expires 2023 Dec 28 00:00:00
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# POSIX timestamps for the data in this file:
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#updated 1467936000 (2016-07-08 00:00:00 UTC)
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#expires 1687910400 (2023-06-28 00:00:00 UTC)
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#expires 1703721600 (2023-12-28 00:00:00 UTC)
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# Updated through IERS Bulletin C64
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# File expires on: 28 June 2023
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# Updated through IERS Bulletin C65
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# File expires on: 28 December 2023

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