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[PATCH] Asia/Ho_Chi_Minh: Correct 1955 transition
by Đoàn Trần Công Danh Jan. 20, 2024

Jan. 20, 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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Fwd: Dave Mills has passed away
by Marshall Eubanks Jan. 19, 2024

Jan. 19, 2024

Sad news. ---------- Forwarded message --------- From: Lars Eggert <lars(a)eggert.org> Date: Fri, Jan 19, 2024 at 12:12 PM Subject: Fwd: Dave Mills has passed away To: <ietf(a)ietf.org> Sad news. -- Sent from a mobile device; please excuse typos. Begin forwarded message: From: vinton cerf <vgcerf(a)gmail.com> Date: January 19, 2024 at 03:39:37 GMT+2 To: Andrew Sullivan <sullivan(a)isoc.org> Cc: Warren Kumari <warren(a)kumari.net>, John C Klensin <klensin(a)jck.com>, Hans-Werner Braun <hwb(a)ucsd.edu>, Dan Lynch <dan(a)lynch.com>, Stephen Kent <stkent(a)verizon.net> Subject: Dave Mills has passed away Please relay to IAB, IETF, IRTF and Hall of Fame His daughter, Leigh, just sent me the news that Dave passed away peacefully on January 17, 2024. He was such an iconic element of the early Internet. Network Time Protocol, the Fuzzball routers of the early NSFNET, INARG taskforce lead, COMSAT Labs and University of Delaware and so much more. vint

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Kazakhstan (all parts) switching to UTC+5 on March 1, 2024 (officially accepted the law)
by Zhanbolat Raimbekov Jan. 19, 2024

Jan. 19, 2024

Kazakhstan (all states/oblasts) switching to UTC+5 on March 1, 2024 at 00:00 Currently, Kazakhstan has two time zones +5 and +6. +6 will switch to +5 on March 1, 2024 at midnight. https://www.gov.kz/memleket/entities/mti/press/news/details/688998?lang=ru (Updated 19 Jan, 2024) -- Zhanbolat Raimbekov

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Kazakhstan to switch to a single time zone on March 1, 2024
by wtz＠worldtimezone.com Jan. 19, 2024

Jan. 19, 2024

According to a different news and the official web site for the Ministry of Trade and Integration of the Republic of Kazakhstan: https://en.inform.kz/news/kazakhstan-to-switch-to-single-hour-zone-mar-1-54… https://akipress.com/news:755336:Single_time_zone_to_be_set_in_Kazakhstan_f… Official web site for the Ministry of Trade and Integration of the Republic of Kazakhstan Kazakhstan to switch to a single time zone (updated text in Russian as of Jan 19, 2024) https://www.gov.kz/memleket/entities/mti/press/news/details/688998?lang=ru [1] (Dec 14, 2023 Press center / Media) https://en.inform.kz/news/kazakhstan-to-switch-to-single-hour-zone-mar-1-54… Single Time Zone in Kazakhstan: A working group of scientists met with public activists in East Kazakhstan Oblast https://www.gov.kz/memleket/entities/mti/press/media/details/42218?lang=en and our link on https://www.worldtimezone.com/dst_news/dst_news_kazakhstan01.html Kazakhstan will switch to the single time zone at 00:00 on March 1, 2024, to introduce the UTC+05.00 time throughout the country, Kazinform News Agency reports. According to the decree as of November 23, 2000, the akimats of Astana, Almaty and Shymkent cities, as well as Akmola, Almaty, Zhambyl, Karaganda, Kostanay, Pavlodar, North Kazakhstan, Turkistan, East Kazakhstan, Abai, Zhetysu, and Ulytau regions, have to turn the clock back an hour in the night of February 29th to March 1st at 00.00. As of today, there are two time zones in Kazakhstan UTC+5 and UTC+6. Regards, Alexander Krivenyshev, WorldTimeZone.com Links: ------ [1] https://www.gov.kz/memleket/entities/mti/press/news/details/688998?lang=ru

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Kazakhstan time zone changes on Feb. 29th
by Ivan Ryzhov Jan. 19, 2024

Jan. 19, 2024

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Kazakhstan switches to UTC+5
by Pavel Starosek Jan. 19, 2024

Jan. 19, 2024

Hello, Today government agencies announced a change in time zone from UTC+6 to UTC+5 from 00:00 on March 1, 2024. After this Kazakhstan will have a single time zone. https://www.gov.kz/memleket/entities/mti/press/news/details/688998?lang=ru > Amendments have been made to the Government Decree “On the procedure for calculating time on the territory of the Republic of Kazakhstan”. According to the changes, the use of a single time zone throughout the country is established from 00:00 on March 1, 2024. > Thus, the 5th time zone (UTC+5) will be applied to the entire territory of the Republic of Kazakhstan. > Today in Kazakhstan there are two time zones UTC+5 and UTC+6. Most of the country's territory (with the exception of the western regions) is located in the UTC+6 zone. > The resolution is subject to official publication and comes into force on March 1, 2024. -- Thanks, Pavel Starosek

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Canadian Geographic Matthews & Vincent article URI updates
by Brian Inglis Jan. 17, 2024

Jan. 17, 2024

Current tzdata contains northamerica:1413: # From Paul Eggert (2014-10-18): # H. David Matthews and Mary Vincent's map # "It's about TIME", _Canadian Geographic_ (September-October 1998) # http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp # contains detailed boundaries for regions observing nonstandard # time and daylight saving time arrangements in Canada circa 1998. Could update this with the Archive.org URIs below or possibly move it to tz-art.html section "Books, plays and magazines": H. David Matthews and Mary Vincent, earliest working Archive.org URIs: https://web.archive.org/web/20071217083933/http://www.canadiangeographic.ca… https://web.archive.org/web/19990827055050/https://canadiangeographic.ca/SO… "It's about TIME", "À la Carte" column, Canadian Geographic Magazine, September/October 1998 issue; original CanGeog URIs: http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp https://canadiangeographic.ca/SO98/geomap.htm Summarizes Canada's time zone rules, boundaries, deviations, and exceptions with maps. In each pair of URIs for Archive.org and CanGeog original, the 1st URI is for article content within that issue's column context, the 2nd URI is the article content alone. -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry

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[PROPOSED] Draft next POSIX has tm_gmtoff, tm_zone
by Paul Eggert Jan. 14, 2024

Jan. 14, 2024

* private.h (TM_GMTOFF, TM_ZONE): Treat draft next POSIX like glibc etc., since it requires tm_gmtoff and tm_zone. --- private.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/private.h b/private.h index 07316289..8eff90b7 100644 --- a/private.h +++ b/private.h @@ -768,7 +768,8 @@ time_t posix2time(time_t); /* Infer TM_ZONE on systems where this information is known, but suppress guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */ -#if (defined __GLIBC__ \ +#if (200809 < _POSIX_VERSION \ + || defined __GLIBC__ \ || defined __tm_zone /* musl */ \ || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \ || (defined __APPLE__ && defined __MACH__)) -- 2.40.1

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[PATCH] Asia/Ho_Chi_Minh 1945-09 Source added
by Đoàn Trần Công Danh Jan. 14, 2024

Jan. 14, 2024

A new source for the transition of Asia/Ho_Chi_Minh and Asia/Hanoi from +09 to +07 was found. The source is Việt Nam Dân Quốc Công Báo (Official Journal of the People Republic of Viet Nam). Original text and translation: Bộ-trưởng bộ Nội-vụ Minister of Ministry of Internal Affairs Chiểu chi nghị-định cựu Toàn-Quyền Đông-Dương ngày 29 tháng 3 năm 1945 ấn định giờ chính thức ở Đông-Dương, Based on the decision of the former Governor-General of the (French) Indochina on the 29th of March, 1945, that dictated the official timezone in Indochina, Nghị-Định Decided Điều thứ nhất: Trong toàn cõi nước Việt-Nam, giờ chính thức do nghị định ngày 29 tháng 3 năm 1945 ấn định, sẽ lui lại hai giờ, kể từ 24 giờ, ngày mồng 1 tháng 9 năm 1945. Article 1: In the whole Viet-Nam, the official timezone as dictated by decision on the 29th of March 1945, would move back 2 hours, effective at 24:00 on the 1st of September 1945 Điều thứ hai: Nghị-định cựu Toàn-Quyền Đông-Dương ngày 29 tháng 3 năm 1945 kể trên từ nay sẽ bãi bỏ. Article 2: The Decision on the 29 of March 1945 of the former Governor-General of the Indochina would be canceled from now on. Hà-nội ngày mồng 1 tháng 9 năm 1945 --- asia | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/asia b/asia index 04526c19..e8317127 100644 --- a/asia +++ b/asia @@ -4058,6 +4058,15 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # which is used below even though the modern-day Phù Liễn Observatory # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT. # +# In September 1, 1945, Vietnam moved back 2 hours, back to GMT+7. +# In that very decision, they mentioned an old decision to change timezone +# in March 29, 1945. It's unknown whether Vietnam moved to GMT+9 either on +# or after March 29, 1945; or the decision (by a Japanese Goveror-General) +# only legalised the change to GMT+9 earlier. +# Source: Việt Nam Dân Quốc Công Báo, No. 1, September 29, 1945 +# Archived by National Library of Viet Nam +# http://baochi.nlv.gov.vn/baochi/cgi-bin/baochi?a=d&d=JwvzO19450929.2.5&srpo… +# # The following transitions occurred in Indochina in general (before 1954) # and in South Vietnam in particular (after 1954): # To 07:00 on 1911-05-01. -- 2.43.0.422.g5e73029237

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Extra transition for Europe/London with 2023d
by Derick Rethans Jan. 14, 2024

Jan. 14, 2024

Hi, I have just updated the tzdb for PHP, and one of our tests started failing, and it turned out due to an unexpected data change: Previously, the following transitions existed: … 1994-03-27 01:00:00 UT ( 764730000) = 1 [ 3600 1 4 'BST' (0,0)] 1994-10-23 01:00:00 UT ( 782874000) = 2 [ 0 0 8 'GMT' (0,0)] 1995-03-26 01:00:00 UT ( 796179600) = 1 [ 3600 1 4 'BST' (0,0)] 1995-10-22 01:00:00 UT ( 814323600) = 2 [ 0 0 8 'GMT' (0,0)] 1996-03-31 01:00:00 UT ( 828234000) = 1 [ 3600 1 4 'BST' (0,0)] POSIX string: GMT0BST,M3.5.0/1,M10.5.0 std: 2 [ 0 0 8 'GMT' (0,0)] dst: 1 [ 3600 1 4 'BST' (0,0)] But now, they include an extra one for Jan 1st, 1996, with the March 31st one now not being the last one: … 1994-03-27 01:00:00 UT ( 764730000) = 1 [ 3600 1 4 'BST' (0,0)] 1994-10-23 01:00:00 UT ( 782874000) = 2 [ 0 0 8 'GMT' (0,0)] 1995-03-26 01:00:00 UT ( 796179600) = 1 [ 3600 1 4 'BST' (0,0)] 1995-10-22 01:00:00 UT ( 814323600) = 2 [ 0 0 8 'GMT' (0,0)] 1996-01-01 00:00:00 UT ( 820454400) = 2 [ 0 0 8 'GMT' (0,0)] POSIX string: GMT0BST,M3.5.0/1,M10.5.0 std: 2 [ 0 0 8 'GMT' (0,0)] dst: 1 [ 3600 1 4 'BST' (0,0)] I couldn't find anywhere in tzfile.5 or theory.html whether the last generated transition must match a transition as specified with the POSIX string (as it did with 2023c and earlier), but I vaguely remember having read such a thing when I implemented the POSIX string parsing logic. As far as I know so-far, the only effect it has on PHP users is that they will now see an extra transition when they enumerate them (the 1996-01-01 is inserted). I think I am mostly flagging this up because this was an unexpected change. cheers, Derick -- https://derickrethans.nl | https://xdebug.org | https://dram.io Author of Xdebug. Like it? Consider supporting me: https://xdebug.org/support Host of PHP Internals News: https://phpinternals.news mastodon: @derickr@phpc.social @xdebug@phpc.social twitter: @derickr and @xdebug

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