August 2007 - tz - lists.iana.org

proposed tz change for Latvia, Lithuania
by Paul Eggert 25 May '15

25 May '15

It's March Madness time for daylight-saving rule changes. Here's a proposed change to the tz database to keep up with the latest political development, which affects time stamps starting March 29: * Latvia and Lithuania will not observe DST, starting this year. Thanks to Andrei Ivanov for this info. =================================================================== RCS file: RCS/europe,v retrieving revision 2000.3 retrieving revision 2000.3.0.1 diff -pu -r2000.3 -r2000.3.0.1 --- europe 2000/03/04 15:31:08 2000.3 +++ europe 2000/03/08 17:48:59 2000.3.0.1 @@ -1135,6 +1135,12 @@ Link Europe/Rome Europe/San_Marino # 1997-01-21 on transition to Summer time ... established the same order of # daylight savings time settings as in the States of the European Union. +# From Andrei Ivanov (2000-03-06): +# This year Latvia will not switch to Daylight Savings Time (as specified in +# <a href="http://www.lv-laiks.lv/wwwraksti/2000/071072/vd4.htm"> +# The Regulations of the Cabinet of Ministers of the Rep. of Latvia of +# 29-Feb-2000 (#79)</a>, in Latvian for subscribers only). + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Latvia 1989 1996 - Mar lastSun 2:00s 1:00 S Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 - @@ -1151,7 +1157,8 @@ Zone Europe/Riga 1:36:24 - LMT 1880 3:00 Russia MSK/MSD 1989 Mar lastSun 2:00s 2:00 1:00 EEST 1989 Sep lastSun 2:00s 2:00 Latvia EE%sT 1997 Jan 21 - 2:00 EU EE%sT + 2:00 EU EE%sT 2000 Feb 29 + 2:00 - EET # Liechtenstein # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -1178,6 +1185,11 @@ Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun # motion to give up shifting to summer time in spring, as it was # already done by Estonia. +# From Andrei Ivanov (2000-03-06): +# I've heard that Ministers of three Baltic countries on their summit +# somewhere in February decided not to switch to summer time starting from +# this spring. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Vilnius 1:41:16 - LMT 1880 1:24:00 - WMT 1917 # Warsaw Mean Time @@ -1192,7 +1204,8 @@ Zone Europe/Vilnius 1:41:16 - LMT 1880 2:00 C-Eur EE%sT 1998 2:00 - EET 1998 Mar 29 1:00u 1:00 EU CE%sT 1999 Oct 31 1:00u - 2:00 EU EE%sT + 2:00 EU EE%sT 2000 Feb + 2:00 - EET # Luxembourg # Whitman disagrees with most of these dates in minor ways; go with Shanks.

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Tomsk wrong timezone
by Jesper Norgaard Welen 18 Feb '11

18 Feb '11

A quote from the 'europe' file: # Novosibirskaya oblast'. Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00 6:00 - NOVT 1930 Jun 21 # Novosibirsk Time 7:00 Russia NOV%sT 1991 Mar 31 2:00s 6:00 Russia NOV%sT 1992 Jan 19 2:00s 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P. 6:00 Russia NOV%sT # # From Oscar van Vlijmen (2001-08-25): [This region consists of] # Kemerovskaya oblast', Krasnoyarskij kraj, # Tajmyrskij (Dolgano-Nenetskij) avtonomnyj okrug, Tomskaya oblast', # Respublika Tuva, Respublika Khakasiya, Evenkijskij avtonomnyj okrug. Zone Asia/Krasnoyarsk 6:11:20 - LMT 1920 Jan 6 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time 7:00 Russia KRA%sT 1991 Mar 31 2:00s 6:00 Russia KRA%sT 1992 Jan 19 2:00s 7:00 Russia KRA%sT In fact, it seems that Tomsk city and Tomskaya oblast' is part of the Novosibirsk timezone, see http://en.wikipedia.org/wiki/Tomskaya_Oblast%27%2C_Russia and http://www.admin.tomsk.ru/1024 ... the latter, if you don't understand russian, look at the time under the green horse. I don't know if this simply means that Tomskaya oblast' changed timezone since 2001, which is a possibility, that would then require a new timezone. Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

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Chinese timezones 1970
by Jesper Norgaard Welen 14 Sep '08

14 Sep '08

I have investigated the timezones around 1970 on the http://www.astro.com/atlas site, and here are the results. I am attaching a GIF file of the map I have built based on this information. The red borders are the modern-time administrative borders, while the green lines are the timezone borders I have determined, note that some of them are partially hidden behind the red lines. There are no big surprises. Most timezones follow modern-day administrative boundaries, with the exceptions being Xinjiang, Xizang (Tibet), Qinghai, Gansu, Nei Mongol (Inner Mongolia) and Guangdong. There was an exception in Heliongjiang region on GMT+8.5 where the northern-most county Mohe is on GMT+8. A few other exceptions were two counties on the Sichuan side of the Xizang - Sichuan border, counties Dege and Baiyu which lies on the Sichuan side and are therefore supposed to be GMT+7, Xizang region being GMT+6, but Dege county is GMT+8 according to astro.com while Baiyu county is GMT+6 (could be true), for the moment I am assuming that those two counties are mistakes in the astro.com data. The biggest surprise was that region Guangdong were dived in 3 timezones, a south/west part on GMT+6 (counties Xuwen, Haikang, Suixi, Lianjiang, Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, Xinyi) a central part on GMT+7 (counties Yangchun, Yangjiang, Taishan, Kaiping, Xinxing, Luoding, Yu'nan, Yunfu, Taishan, Deqing and Enping) and a north/east part on GMT+8 with the rest of the counties. Zone Asia/Harbin on GMT+8.5: regions Heilongjiang (minus Mohe) and Jilin. Zone Asia/Shanghai on GMT+8: regions east Nei Mongol, Liaoning, Hebei + Beijing, Shanxi, Shandong, Henan, Jiangsu, Anhui, Shanghai, Zhejiang, Hubei, Hunan, Jiangxi, Fujian, north/east Guangdong and Mohe county of Heilongjiang. Zone Asia/Chongqing on GMT+7: regions west Nei Mongol, Ningxia, Shaanxi, east Gansu, west Qinghai, Sichuan, Guizhou, Guangxi, Yunnan, Hainan island and the central part of Guangdong province. Zone Asia/Urumqi on GMT+6: regions east Xinjiang, west Gansu (counties Dunhuang, Aksay, Anxi, Subei), west Qinghai, east Xizang (Tibet) and east Guangdong. Zone Asia/Kashgar on GMT+5: regions west Xinjiang, west Xizang. Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

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C#/VB.NET PublicDomain Olson Time Zone Database Implementation
by Kevin 07 Sep '07

07 Sep '07

Hi, I created a fully Public Domain .NET library which implements the Olson time zone database for .NET applications. The package is called PublicDomain and the source, binaries, and documentation are available at http://www.codeplex.com/PublicDomain. Olson time zone database support is just one part of a larger package of various pieces of public domain code. The package was written from scratch in C# and includes an objectified form of the olson time zone database (because we all know how fun it is to analyze the raw, obfuscated data). I also created a variety of unit and regression tests. The implementation used to be quite experimental, but now it has gone through a bit of usage and appears to be getting quite solid. I also wrote an article on codeproject discussing a simple use case of using the package (http://www.codeproject.com/useritems/Using_time_zones_in_NET.asp) I would appreciate it if you included a description of this package for those that use .NET, including C#, VB.NET, etc. on the Olson Time zone database home page (http://www.twinsun.com/tz/tz-link.htm) -- using some form of less verbose description than mine above :-). Thanks! Kevin

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FW: daylight saving in Egypt
by Olson, Arthur David (NIH/NCI) [E] 04 Sep '07

04 Sep '07

I'm forwarding this message from Dirk Losch, who is on the time zone mailing list on an address other than the one from which this message was sent. Direct replies appropriately. --ado -----Original Message----- From: Dirk Losch [mailto:dirk.losch@gmx.de] Sent: Tuesday, August 14, 2007 5:38 To: tz(a)lecserver.nci.nih.gov Subject: daylight saving in Egypt Hello, I received a mail from an airline which says that the daylight saving time in Egypt will end in the night of 2007-09-06 to 2007-09-07. Can anyone confirm this? In the database are the following entries: .... Rule Egypt 1995 max - Apr lastFri 0:00s 1:00 S Rule Egypt 1995 2005 - Sep lastThu 23:00s 0 - # From Steffen Thorsen (2006-09-19): # The Egyptian Gazette, issue 41,090 (2006-09-18), page 1, reports: # Egypt will turn back clocks by one hour at the midnight of Thursday # after observing the daylight saving time since May. # http://news.gom.com.eg/gazette/pdf/2006/09/18/01.pdf Rule Egypt 2006 only - Sep 21 23:00s 0 - Rule Egypt 2007 max - Sep lastThu 23:00s 0 - ... Best regards - dirk -

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FW: EU BST-->GMT issue
by Olson, Arthur David (NIH/NCI) [E] 30 Aug '07

30 Aug '07

I'm forwarding this message from Dafydd Rhys-Jones, who sent it before joining the time zone mailing list. --ado From: Dafydd Rhys-Jones [mailto:D.Rhys-Jones@F5.com] Sent: Wednesday, August 29, 2007 5:38 To: tz(a)lecserver.nci.nih.gov Subject: EU BST-->GMT issue Hello all, Are there any known bugs revolving around the EU timezone not reverting from BST back to GMT? [root@server2 ~]# rm -f /etc/localtime ; ln -s /usr/share/zoneinfo/Europe/London /etc/localtime [root@server2 ~]# date Wed Aug 29 21:42:31 BST 2007 [root@server2 ~]# date -s "Sun Oct 26 00:59:59 2008" Sun Oct 26 00:59:59 BST 2008 [root@server2 ~]# date Sun Oct 26 00:59:59 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:01 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:02 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:03 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:04 BST 2008 [root@server2 ~]# date -s "Sun Oct 26 01:00:01 2008" Sun Oct 26 01:00:01 GMT 2008 Dafydd Rhys-Jones | Software Test Engineer F5 Networks P 206.272.5555 F 206.272.5556 www.f5.com D 206.272.6280 M 206.335.1096

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EU BST-->GMT issue
by Dafydd Rhys-Jones 29 Aug '07

29 Aug '07

Hello all, Are there any known bugs revolving around the EU timezone not reverting from BST back to GMT? [root@server2 ~]# rm -f /etc/localtime ; ln -s /usr/share/zoneinfo/Europe/London /etc/localtime [root@server2 ~]# date Wed Aug 29 21:42:31 BST 2007 [root@server2 ~]# date -s "Sun Oct 26 00:59:59 2008" Sun Oct 26 00:59:59 BST 2008 [root@server2 ~]# date Sun Oct 26 00:59:59 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:01 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:02 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:03 BST 2008 [root@server2 ~]# date Sun Oct 26 01:00:04 BST 2008 [root@server2 ~]# date -s "Sun Oct 26 01:00:01 2008" Sun Oct 26 01:00:01 GMT 2008 Dafydd Rhys-Jones | Software Test Engineer F5 Networks P 206.272.5555 F 206.272.5556 www.f5.com <http://www.f5.com> D 206.272.6280 M 206.335.1096

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please update ICU homepage URL on http://www.twinsun.com/tz/tz-link.htm
by Markus Scherer 27 Aug '07

27 Aug '07

Dear TZ DB maintainers, Please update the ICU homepage URL on http://www.twinsun.com/tz/tz-link.htm from http://www-306.ibm.com/software/globalization/icu/ to http://icu-project.org/ Thanks and best regards, markus

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time zone shift in Venezuela
by Karl Swartz 27 Aug '07

27 Aug '07

I assume an update is coming soon which will cover the time zone change (from UTC-4 to UTC-4.5) next month: http://www.alertnet.org/thenews/newsdesk/N23289803.htm The latest files on the ftp site (2007g) don't have this yet. Then again, maybe nobody has been able to figure out WHEN in September this is happening -- I sure couldn't find any details. :-( -- Karl

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FW: FW: Venezuela's switch to UTC-0430
by Olson, Arthur David (NIH/NCI) [E] 27 Aug '07

27 Aug '07

I'm forwarding this message from José Miguel Parrella Romero, who sent it before joining the time zone mailing list. --ado -----Original Message----- From: José Miguel Parrella Romero [mailto:joseparrella@gmail.com] Sent: Friday, August 24, 2007 3:30 To: Patrice Scattolin Cc: tz(a)lecserver.nci.nih.gov Subject: Re: FW: Venezuela's switch to UTC-0430 Patrice Scattolin escribió: > More importantly, does anyone know how likely that said change be > adopted? When is it expected to be adopted? It would be risky to say that the change _will_ be adopted, but the forecast says it will, due to political reasons. Though it was said to be adopted on Jan 1 2008, today's newspapers stated that the government is trying to push it in order to make the switch in Sep 17 2007. They also said that the government will notify all international organizations when the decision is taken. Jose

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