January 2024 - tz - lists.iana.org

possible change to daylight saving rules in Palestine
by Paul Eggert Jan. 24, 2024

Jan. 24, 2024

Thank you for letting me know that the Palestinian cabinet is scheduled to respond this week to your address to them about daylight saving time during Ramadan. It would be convenient for cell phones and computers using the TZDB database if the cabinet decides to spring forward on April 13 at 02:00, and fall back on October 26 at 02:00, as that is what is predicted in TZDB. If the cabinet decides differently, I appreciate your offer to let us know as soon as possible. We are planning to issue a new TZDB release soon. It'd be helpful if any changes for Palestine could be incorporated in this new release, so that downstream users don't have the hassle of dealing with extra releases. I will cc this message to the tz mailing list to let people there know about this possible effect on our release schedule. If the cabinet needs reminding, I'll mention again that it's helpful to get a year's notice about unexpected changes, as discussed here: https://www.icann.org/en/blogs/details/how-time-zones-are-coordinated-13-03…

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[PROPOSED] Update link to Palestine MTIT
by Paul Eggert Jan. 24, 2024

Jan. 24, 2024

* tz-link.html: Update link --- tz-link.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tz-link.html b/tz-link.html index 93c047cb..5840f48f 100644 --- a/tz-link.html +++ b/tz-link.html @@ -930,7 +930,7 @@ href="https://www.dia.govt.nz/Daylight-Saving-History">History of Daylight Saving</a>.</dd> <dt>Palestine</dt> <dd>The Ministry of Telecom and IT publishes a <a -href="https://mtit.pna.ps/Site/TimeZoon" +href="https://mtit.pna.ps/home/TimeZone" hreflang="ar">history of clock changes (in Arabic)</a>.</dd> <dt>Portugal</dt> <dd>The Lisbon Astronomical Observatory publishes a -- 2.40.1

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Re: [tz] Time zone offset changing in Almaty and Qostanay, Kazakhstan
by Andrey.Kazakevich＠erg.kz Jan. 24, 2024

Jan. 24, 2024

Hello! How I can know when this change will be released? Have you some tracking or history of changes in database?

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Washington state to permanent standard time?
by Arthur David Olson Jan. 24, 2024

Jan. 24, 2024

"Washington’s latest daylight saving time proposal would mean earlier summer sunsets." https://washingtonstatestandard.com/2024/01/16/washingtons-latest-daylight-… The article notes that Washington state adopted permanent daylight saving time in 2019, contingent on federal approval; that approval not having been provided, the current proposal is to use standard time year-round (a switch that does not require federal approval but allows the state to "ditch the switch"). The bill text is available at... https://app.leg.wa.gov/committeeschedules/Home/Document/264443#toolbar=0&na… ...and includes "...this act takes effect on November 4, 2024." (Meanwhile, I've yet to find the introduction of a time-change bill in the Maryland legislature; bills have been introduced the last few years.) @dashado

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Time zone offset changing in Almaty and Qostanay, Kazakhstan
by Alexandr Uskov Jan. 24, 2024

Jan. 24, 2024

Hello, According act of the Government of the Republic of Kazakhstan from 2024-01-19 #20 (https://adilet.zan.kz/rus/docs/P2400000020 (russian language)) time offset for zones Asia/Almaty and Asia/Qostanay from Mar 1st 2024 00:00 (local time) must be set to UTC+5 instead of UTC+6. ~~~ wbr, Alexandr Uskov

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Kazach
by Alexey Sharkov (KZ) Jan. 24, 2024

Jan. 24, 2024

Hello Decree of the Government of the Republic of Kazakhstan dated November 23, 2000 No. 1749 https://adilet.zan.kz/rus/docs/P2400000020 (Russian lang) 3-1. Акиматам городов Астаны, Алматы, Шымкента, Акмолинской, Алматинской, Жамбылской, Карагандинской, Костанайской, Павлодарской, Северо-Казахстанской, Туркестанской, Восточно-Казахстанской областей и областей Абай, Жетісу, Ұлытау в ночь с 29 февраля 2024 года на 1 марта 2024 года (в 00:00 часов) перевести местное время на 1 час назад.". For all Kazakhstan zones set local time back 1 hour night of February 29, 2024 to March 1, 2024 (at 00:00 hours) Zone Asia/Almaty Zone Asia/Qyzylorda Zone Asia/Qostanay Zone Asia/Aqtobe Zone Asia/Aqtau Zone Asia/Atyrau Zone Asia/Oral Internal Home Credit Bank Kazakhstan

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strftime %s
by Dag-Erling Smørgrav Jan. 23, 2024

Jan. 23, 2024

Currently, strftime() implements %s by calling mktime() and then printing the result. This is fine when the struct tm passed to strftime() came from localtime() but not when it didn't. A better solution would be to call timegm() and then manually adjust the result. Of course that's only possible in the TM_GMTOFF case but that's still better than nothing. The first attachment is a program which demonstrates the issue. It should print the same value for %s in both cases but doesn't: % cc -Wall -Wextra -o strftime_s strftime_s.c % ./strftime_s local 1704903586 2024-01-10 17:19:46 CET gm 1704899986 2024-01-10 16:19:46 UTC The second attachment is my proposed fix. DES -- Dag-Erling Smørgrav - des(a)des.no

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[PROPOSED 1/2] Update some tz-link links
by Paul Eggert Jan. 22, 2024

Jan. 22, 2024

* tz-link.html: Update some citations and remove some that no longer work. --- asia | 4 ++-- australasia | 2 +- tz-link.html | 33 ++++++++++++++------------------- 3 files changed, 17 insertions(+), 22 deletions(-) diff --git a/asia b/asia index a2055e6d..1a6fa4f8 100644 --- a/asia +++ b/asia @@ -3620,7 +3620,7 @@ Zone Asia/Hebron 2:20:23 - LMT 1900 Oct # Philippines -# From Paul Eggert (2018-11-18): +# From Paul Eggert (2024-01-21): # The Spanish initially used American (west-of-Greenwich) time. # It is unknown what time Manila kept when the British occupied it from # 1762-10-06 through 1764-04; for now assume it kept American time. @@ -3628,7 +3628,7 @@ Zone Asia/Hebron 2:20:23 - LMT 1900 Oct # Philippines, issued a proclamation announcing that 1844-12-30 was to # be immediately followed by 1845-01-01; see R.H. van Gent's # History of the International Date Line -# https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm +# https://webspace.science.uu.nl/~gent0113/idl/idl_philippines.htm # The rest of the data entries are from Shanks & Pottenger. # From Jesper Nørgaard Welen (2006-04-26): diff --git a/australasia b/australasia index a9e9eb4a..0e9c2592 100644 --- a/australasia +++ b/australasia @@ -2043,7 +2043,7 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila # ordaining - by a masterpiece of diplomatic flattery - that # the Fourth of July should be celebrated twice in that year." # This happened in 1892, according to the Evening News (Sydney) of 1892-07-20. -# https://www.staff.science.uu.nl/~gent0113/idl/idl.htm +# https://webspace.science.uu.nl/~gent0113/idl/idl_alaska_samoa.htm # Although Shanks & Pottenger says they both switched to UT -11:30 # in 1911, and to -11 in 1950. many earlier sources give -11 diff --git a/tz-link.html b/tz-link.html index 84bea935..93c047cb 100644 --- a/tz-link.html +++ b/tz-link.html @@ -362,9 +362,6 @@ lets you see the <code><abbr>TZ</abbr></code> values directly.</li> <li><a href="https://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current Time in 1000 Places</a> uses descriptions of the values.</li> -<li><a href="https://home.kpn.nl/vanadovv/time/TZworld.html">Complete -timezone information for all countries</a> -displays tables of <abbr>DST</abbr> rules. <li><a href="https://www.timeanddate.com/worldclock/">The World Clock – Worldwide</a> lets you sort zone names and convert times.</li> <li><a href="https://24timezones.com">24TimeZones</a> has a world @@ -666,9 +663,7 @@ available under a <abbr>BSD</abbr>-style license.</li> <ul> <li><a href="https://foxclocks.org">FoxClocks</a> is an extension for <a href="https://www.google.com/chrome/">Google -Chrome</a> and for <a -href="https://wiki.mozilla.org/Modules/Toolkit">Mozilla -Toolkit</a> applications like <a +Chrome</a>, <a href="https://www.mozilla.org/en-US/firefox/new/">Firefox</a> and <a href="https://www.mozilla.org/en-US/thunderbird/">Thunderbird</a>. It displays multiple clocks in the application window, and has a mapping @@ -826,9 +821,6 @@ coordinates?</a>" discusses other geolocation possibilities.</li> <li><a href="http://statoids.com/statoids.html">Administrative Divisions of Countries ("Statoids")</a> lists political subdivision data related to time zones.</li> -<li><a href="https://home.kpn.nl/vanadovv/time/Multizones.html">Time -zone boundaries for multizone countries</a> summarizes legal -boundaries between time zones within countries.</li> <li><a href="https://manifold.net/info/freestuff.shtml">Manifold Software – GIS and Database Tools</a> includes a Manifold-format map of world time zone boundaries distributed under the @@ -862,7 +854,7 @@ Lords</a> discusses how authoritarians manipulate civil time.</li> <li><a href="https://www.w3.org/TR/timezone/">Working with Time Zones</a> contains guidelines and best practices for software applications that deal with civil time.</li> -<li><a href="https://www.staff.science.uu.nl/~gent0113/idl/idl.htm">A History of +<li><a href="https://webspace.science.uu.nl/~gent0113/idl/idl.htm">A History of the International Date Line</a> tells the story of the most important time zone boundary.</li> <li><a href="http://statoids.com/tconcept.html">Basic Time @@ -875,7 +867,7 @@ Zone Concepts</a> discusses terminological issues behind time zones.</li> <dl> <dt>Australia</dt> <dd>The Parliamentary Library commissioned a <a -href="https://www.aph.gov.au/binaries/library/pubs/rp/2009-10/10rp10.pdf">research +href="https://parlinfo.aph.gov.au/parlInfo/download/library/prspub/359V6/upload_b…">research paper on daylight saving time in Australia</a>. The Bureau of Meteorology publishes a list of <a href="http://www.bom.gov.au/climate/averages/tables/dst_times.shtml">Implementation @@ -883,9 +875,9 @@ Dates of Daylight Savings Time within Australia</a>.</dd> <dt>Belgium</dt> <dd>The Royal Observatory of Belgium maintains a table of time in Belgium (in -<a href="https://www.astro.oma.be/GENERAL/INFO/nli001a.html" +<a href="https://robinfo.oma.be/nl/astro-info/tijd/" hreflang="nl">Dutch</a> and <a -href="https://www.astro.oma.be/GENERAL/INFO/fri001a.html" +href="https://robinfo.oma.be/fr/astro-info/heure/" hreflang="fr">French</a>).</dd> <dt>Brazil</dt> <dd>The Time Service Department of the National Observatory @@ -929,7 +921,7 @@ Congress has published a <a href="https://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.…" hreflang="es">history of Mexican local time (in Spanish)</a>.</dd> <dt>Netherlands</dt> -<dd><a href="https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm" +<dd><a href="https://webspace.science.uu.nl/~gent0113/wettijd/wettijd.htm" hreflang="nl">Legal time in the Netherlands (in Dutch)</a> covers the history of local time in the Netherlands from ancient times.</dd> <dt>New Zealand</dt> @@ -986,14 +978,17 @@ neither supports nor refutes road safety benefits from shifts in time zones.</li> <li>Havranek T, Herman D, Irsova D. <a href="https://www.iaee.org/en/publications/ejarticle.aspx?id=3051">Does -daylight saving save electricity? A meta-analysis.</a> +daylight saving save electricity? A meta-analysis</a>. Energy J. 2018;39(2):35–61. doi:<a href="https://doi.org/10.5547/01956574.39.2.thav">10.5547/01956574.39.2.thav</a>. This analyzes research literature and concludes, "Electricity savings are larger for countries farther away from the equator, while subtropical regions consume more electricity because of <abbr>DST</abbr>."</li> -<li>Malow BA. It is time to abolish the clock change and adopt permanent -standard time in the United States: a Sleep Research Society position statement. +<li>Malow BA. <a +href="https://academic.oup.com/sleep/article/45/12/zsac236/6717940">It is time +to abolish the clock change and adopt permanent +standard time in the United States: +a Sleep Research Society position statement</a>. Sleep. 2022;45(12):zsac236. doi:<a href="https://doi.org/10.1093/sleep/zsac236">10.1093/sleep/zsac236</a>. After reviewing the scientific literature, the Sleep Research Society @@ -1002,13 +997,13 @@ advocates permanent standard time due to its health benefits. <a href="https://jcsm.aasm.org/doi/10.5664/jcsm.10898">Permanent standard time is the optimal choice for health and safety: an American Academy of Sleep Medicine position statement</a>. -J Clin Sleep Med. 2023-10-31. +J Clin Sleep Med. 2024;20(1):121–125. doi:<a href="https://doi.org/10.5664/jcsm.10898">10.5664/jcsm.10898</a>. The AASM argues for permanent standard time due to health and safety risks and economic costs of both <abbr>DST</abbr> transitions and permanent <abbr>DST</abbr>.</li> <li>Roenneberg T, Wirz-Justice A, Skene DJ et al. -<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7205184/">Why +<a href="https://journals.sagepub.com/doi/10.1177/0748730419854197">Why should we abolish Daylight Saving Time?</a> J Biol Rhythms. 2019;34(3):227–230. doi:<a href="https://doi.org/10.1177/0748730419854197">10.1177/0748730419854197</a>. -- 2.40.1

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Kazakhstan (all parts) switching to UTC+5 on March 1, 2024
by Zhanbolat Raimbekov Jan. 20, 2024

Jan. 20, 2024

Kazakhstan (all parts) switching to UTC+5 on March 1, 2024 https://www.gov.kz/memleket/entities/mti/press/news/details/688998?lang=ru

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[PATCH] Asia/Ho_Chi_Minh: Correct 1955 transition
by Đoàn Trần Công Danh Jan. 19, 2024

Jan. 19, 2024

While we're at it, updating source for 1959 transition. Ordinance 46 of 1955, first article read: Kể từ ngày mồng 1 tháng bảy năm 1955, giờ chính-thức ở Việt-nam là giờ của thời đạo thứ bảy. >From the 1955-07-01, the offical time in Vietnam is the time of the +07 timezone. ... lùi chậm sáu mươi phút, trong đêm hôm 30 tháng sáu năm 1955, rạng mặt ngày mồng 1 tháng bảy năm 1955 lúc một giờ sáng. ... move back 60 minutes, in the night of 1955-06-30, early morning of 1955-07-01 at 1AM. Decree 362-TTP of 1959, first article read: Kể từ ngày mồng 1 tháng giêng d.l. năm 1960, giờ chánh thức và pháp định ở Việt-nam được đặt nhanh hơn giờ của thời-đạo thứ bảy sáu mươi phút. >From the 1st of January 1960, de facto and de jure time in Vietnam will be faster than the +07 timezone, 60 minutes. ... vặn nhanh lên sáu mươi phút lúc 23 giờ đêm hôm 31 tháng chạp d.l. năm 1959, rạng mặt ngày mồng 1 tháng giêng d.l. năm 1960. ... fast forward 60 minutes at 23:00 of the night of 1959-12-31, early morning of 1960-01-01. --- NEWS | 3 +++ asia | 14 +++++++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index 653512fa..705a2985 100644 --- a/NEWS +++ b/NEWS @@ -8,6 +8,9 @@ Unreleased, experimental changes Changes to past timestamps + In 1955, Asia/Ho_Chi_Minh's transitions occurred at 01:00 the + next day. (Reported by Đoàn Trần Công Danh.) + From 1947 through 1949, Toronto's transitions occurred at 02:00 not 00:00. (Thanks to Chris Walton.) diff --git a/asia b/asia index 8028c06e..db0c90e3 100644 --- a/asia +++ b/asia @@ -4088,6 +4088,18 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # It also mentions a 1945-03-29 decree (by a Japanese Goveror-General) # to set the time zone to +09, but does not say whether that decree # merely legalized an earlier change to +09. +# +# July 1955 transition: +# Ngô Đình Diệm, Công Báo Việt Nam, No. 92 (1955-07-02), page 1780-1781 +# Ordinance (Dụ) No. 46 (1955-06-25) +# http://ddsnext.crl.edu/titles/32341#?c=0&m=29&s=0&cv=4&r=0&xywh=-89%2C342%2… +# It says that on 1955-07-01 at 01:00, South Vietnam moved back 1 hour (to +07). +# +# December 1959 transition: +# Ngô Đình Diệm, Công Báo Việt Nam Cộng Hòa, 1960 part 1 (1960-01-02), page 62 +# Decree (Sắc lệnh) No. 362-TTP (1959-12-30) +# http://ddsnext.crl.edu/titles/32341#?c=0&m=138&s=0&cv=793&r=0&xywh=-54%2C15… +# It says that on 1959-12-31 at 23:00, South Vietnam moved forward 1 hour (to +08). # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -4098,7 +4110,7 @@ Zone Asia/Ho_Chi_Minh 7:06:30 - LMT 1906 Jul 1 8:00 - +08 1945 Mar 14 23:00 9:00 - +09 1945 Sep 1 24:00 7:00 - +07 1947 Apr 1 - 8:00 - +08 1955 Jul 1 + 8:00 - +08 1955 Jul 1 01:00 7:00 - +07 1959 Dec 31 23:00 8:00 - +08 1975 Jun 13 7:00 - +07 -- 2.43.0.422.g5e73029237

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