August 2008 - tz - lists.iana.org

proposed tz change for Latvia, Lithuania
by Paul Eggert May 25, 2015

May 25, 2015

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 Feb. 18, 2011

Feb. 18, 2011

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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FW: Australian DST abbreviations causing business problems - still
by Olson, Arthur David (NIH/NCI) [E] Jan. 16, 2009

Jan. 16, 2009

I'm forwarding this message from Mick Johnston, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado -----Original Message----- From: Mick Johnston [mailto:Mick.Johnston@coles.com.au] Sent: Tuesday, August 26, 2008 1:42 To: 'tz(a)elsie.nci.nih.gov' Subject: Australian DST abbreviations causing business problems - still It's well past time the Australian 'Daylight Saving Time' abbreviations were updated to reflect the current terms and usage. Comments posted previously in the 'australasia' file are outdated and wrong and have been causing lots of problems for years. You don't have to take my word for this. Although most of the URLs identified in the file are not official sites and Daylight Saving Time is legislated by state governments, the exemplary abbreviations are displayed at the Australian federal government website at <http://www.australia.gov.au/Time#daylightsaving> as at 26/8/08. Here is the important bit: Quote: Where daylight saving is being observed: * AEST becomes Australian Eastern Daylight Time (AEDT), and clocks are advanced to UTC +11. * ACST becomes Australian Central Daylight Time (ACDT), and clocks are advanced to UTC +10 ½. * AWST becomes Australian Western Daylight Time (AWDT), and clocks are advanced to UTC +9. " Unquote: The abbreviations AEDT, ACDT and AWDT are commonly shortened to EDT, CDT and WDT. Is there really a problem? Yes. I work for a national retail company that makes deliveries across the country. Here is just one example of the sorts of problems we face. Queensland don't have Daylight Saving Time. New South Wales (across the border from Queensland) do have Daylight Saving Time. Due to the fact that the Olsen data uses EST for both 'Eastern Summer Time' (New South Wales) and 'Eastern Standard Time' (Queensland), a delivery from New South Wales to Queensland can have a pickup time of 10.30am EST and a delivery time of 10.00am EST. We like to be efficient but we're not that good. System users only see the EST and get horribly confused. If the problem impacts businesses, then why don't they use their own time zone tables? It's not that simple. It's quite common today to find systems (like ours) that are purchased on an enterprise licence basis from a large international company. It could be difficult to get the company to change the base software product. Also, it's common for software products to run on standard operating systems such as the AIX flavour of Unix, and for the software products to use whatever time zone information is applied by the operating system. Try getting the operating system vendor to change their software and they'll simply tell you it's based on the Olsen updates. Then why hasn't the table been changed already? To answer this question, I need to address some of the comments previously made in the 'australasia' file. The first comment on this subject in the file was made by John Mackin back in 1991: JM:" We in Australia have _never_ referred to DST as `daylight' time. It is called `summer' time." MJ: This comment is more than 17 years old and horribly outdated. I have lived in Australia all my life and have been supporting systems here since well before 1991. Most Australians simply use the term 'Daylight Saving Time'. It's uncommon outside the business environment to use any other term. In business and government, Australians recognized the problems associated with ambiguous abbreviations a long time ago and have generally adopted the 'EDT' form. Various federal government websites (although not official), in an attempt to encourage uniformity, have been displaying the newer abbreviations for some time. See <http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml> <http://www.australia.gov.au/Time#daylightsaving> Paul Eggert wrote an interesting post in 2001 that needs to be addressed. PE: "My own impression is that both "Daylight Time" and "Summer Time" are common and are widely understood, but that "Summer Time" is more popular;" MJ: Based on my day-to-day observations and discussions with people across states, most Australians now don't use the term 'Eastern Summer Time'. PE: "I just used AltaVista advanced search and got the following count of page hits: 1,103 "Eastern Summer Time" AND domain:au 971 "Australian Eastern Summer Time" AND domain:au 613 "Eastern Daylight Time" AND domain:au 127 "Australian Eastern Daylight Time" AND domain:au" MJ: I just googled (26/8/08) similar searches based on an "Australia only" search and my results were: 30,500 - "eastern daylight time" 5,640 - "eastern summer time" PE: "For abbreviations, tools like AltaVista are less useful because of ambiguity. Many hits are not really time zones, unfortunately, and many hits denote US time zones and not Australian ones. But here are the hit counts anyway: 161,304 "EST" and domain:au 25,156 "EDT" and domain:au" MJ: I agree with your comments, which means the figures are totally inaccurate. File Changes: Due to the fact that the file forms part of the JTZU (Java Time Zone Updates) provided by the operating system vendor, I am unable to create and test proposed changes. Also, there are quite a few changes required and I don't want to spend hours making these changes if they're not going to be applied. I ask for your advice on how to proceed with this. I am happy to work with you to produce a complete set of revised rules if you decide to go ahead with this proposal. We will need to change Aus, AW, AS, AT, AV and AN rules and their corresponding zone formats to use the 'E%sT' format. Thanks for your time and assistance Mick Johnston Dept: CGL - IT ES Supply Chain * L4 Bourke St. Melbourne (ILS Support) * (03) 9635 4457 This email and any attachments may contain privileged and confidential information and are intended for the named addressee only. If you have received this e-mail in error, please notify the sender and delete this e-mail immediately. Any confidentiality, privilege or copyright is not waived or lost because this e-mail has been sent to you in error. It is your responsibility to check this e-mail and any attachments for viruses. No warranty is made that this material is free from computer virus or any other defect or error. Any loss/damage incurred by using this material is not the sender's responsibility. The sender's entire liability will be limited to resupplying the material.

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Chinese timezones 1970
by Jesper Norgaard Welen Sept. 14, 2008

Sept. 14, 2008

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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Time Zone database change
by Joe Canner Aug. 31, 2008

Aug. 31, 2008

FYI and FWIW: Morocco has decided to switch from DST to standard time (=GMT) on September 1, 2008 instead of September 28, 2008. Regards, Joseph K. Canner IT Director George Washington Academy Casablanca, MOROCCO

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Brazil's dates announced
by Steffen Thorsen Aug. 29, 2008

Aug. 29, 2008

As announced by the government and many newspapers in Brazil late yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and it will end on 2009-02-15 (current rule for Brazil is fine). Based on past years experience with the elections, there was a good chance that the start was postponed to November, but it did not happen this year. It has not yet been posted to http://pcdsh01.on.br/DecHV.html An official page about it: http://www.mme.gov.br/site/news/detail.do?newsId=16722 Note that this link does not always work directly, but must be accessed by going to http://www.mme.gov.br/ first One example link that works directly: http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemi… (Portuguese) We have a written a short article about it as well: http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html Regards, Steffen Thorsen - timeanddate.com

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Gaza Strip ended DST while West Bank will end DST at midnight Aug 31, 2008.
by Alexander Krivenyshev Aug. 28, 2008

Aug. 28, 2008

Here is an article, that Mideast running on different clocks at Ramadan. Gaza Strip (as Egypt) ended DST at midnight Thursday (Aug 28, 2008), while the West Bank will end Daylight Saving Time at midnight Sunday (Aug 31, 2008). http://www.guardian.co.uk/world/feedarticle/7759001 http://www.abcnews.go.com/International/wireStory?id=5676087 or http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html Regards, Alexander Krivenyshev, http://www.worldtimezone.com/dst_news/ New York, NY

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Pakistan DST extended till Oct 31
by Alexander Krivenyshev Aug. 28, 2008

Aug. 28, 2008

Pakistan government has decided to keep the watches one-hour advanced for another 2 months- plan to return to Standard Time on October 31 instead of August 31. http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html OR http://dailymailnews.com/200808/28/news/dmbrn03.html Regards, Alexander Krivenyshev, http://www.worldtimezone.com/dst_news/ New York, NY

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Morocco ends DST early
by Steffen Thorsen Aug. 27, 2008

Aug. 27, 2008

Morocco will change the clocks back on the midnight between August 31 and September 1. They originally planned to observe DST to near the end of September: One article about it (in French): http://www.menara.ma/fr/Actualites/Maroc/Societe/ci.retour_a_l_heure_gmt_a_… We have some further details posted here: http://www.timeanddate.com/news/time/morocco-ends-dst-early-2008.html Best regards, Steffen Thorsen - timeanddate.com

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Australian DST abbreviations causing business problems - still
by Mick Johnston Aug. 26, 2008

Aug. 26, 2008

It's well past time the Australian 'Daylight Saving Time' abbreviations were updated to reflect the current terms and usage. Comments posted previously in the 'australasia' file are outdated and wrong and have been causing lots of problems for years. You don't have to take my word for this. Although most of the URLs identified in the file are not official sites and Daylight Saving Time is legislated by state governments, the exemplary abbreviations are displayed at the Australian federal government website at <http://www.australia.gov.au/Time#daylightsaving> as at 26/8/08. Here is the important bit: Quote: Where daylight saving is being observed: * AEST becomes Australian Eastern Daylight Time (AEDT), and clocks are advanced to UTC +11. * ACST becomes Australian Central Daylight Time (ACDT), and clocks are advanced to UTC +10 ½. * AWST becomes Australian Western Daylight Time (AWDT), and clocks are advanced to UTC +9. " Unquote: The abbreviations AEDT, ACDT and AWDT are commonly shortened to EDT, CDT and WDT. Is there really a problem? Yes. I work for a national retail company that makes deliveries across the country. Here is just one example of the sorts of problems we face. Queensland don't have Daylight Saving Time. New South Wales (across the border from Queensland) do have Daylight Saving Time. Due to the fact that the Olsen data uses EST for both 'Eastern Summer Time' (New South Wales) and 'Eastern Standard Time' (Queensland), a delivery from New South Wales to Queensland can have a pickup time of 10.30am EST and a delivery time of 10.00am EST. We like to be efficient but we're not that good. System users only see the EST and get horribly confused. If the problem impacts businesses, then why don't they use their own time zone tables? It's not that simple. It's quite common today to find systems (like ours) that are purchased on an enterprise licence basis from a large international company. It could be difficult to get the company to change the base software product. Also, it's common for software products to run on standard operating systems such as the AIX flavour of Unix, and for the software products to use whatever time zone information is applied by the operating system. Try getting the operating system vendor to change their software and they'll simply tell you it's based on the Olsen updates. Then why hasn't the table been changed already? To answer this question, I need to address some of the comments previously made in the 'australasia' file. The first comment on this subject in the file was made by John Mackin back in 1991: JM:" We in Australia have _never_ referred to DST as `daylight' time. It is called `summer' time." MJ: This comment is more than 17 years old and horribly outdated. I have lived in Australia all my life and have been supporting systems here since well before 1991. Most Australians simply use the term 'Daylight Saving Time'. It's uncommon outside the business environment to use any other term. In business and government, Australians recognized the problems associated with ambiguous abbreviations a long time ago and have generally adopted the 'EDT' form. Various federal government websites (although not official), in an attempt to encourage uniformity, have been displaying the newer abbreviations for some time. See <http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml> <http://www.australia.gov.au/Time#daylightsaving> Paul Eggert wrote an interesting post in 2001 that needs to be addressed. PE: "My own impression is that both "Daylight Time" and "Summer Time" are common and are widely understood, but that "Summer Time" is more popular;" MJ: Based on my day-to-day observations and discussions with people across states, most Australians now don't use the term 'Eastern Summer Time'. PE: "I just used AltaVista advanced search and got the following count of page hits: 1,103 "Eastern Summer Time" AND domain:au 971 "Australian Eastern Summer Time" AND domain:au 613 "Eastern Daylight Time" AND domain:au 127 "Australian Eastern Daylight Time" AND domain:au" MJ: I just googled (26/8/08) similar searches based on an "Australia only" search and my results were: 30,500 - "eastern daylight time" 5,640 - "eastern summer time" PE: "For abbreviations, tools like AltaVista are less useful because of ambiguity. Many hits are not really time zones, unfortunately, and many hits denote US time zones and not Australian ones. But here are the hit counts anyway: 161,304 "EST" and domain:au 25,156 "EDT" and domain:au" MJ: I agree with your comments, which means the figures are totally inaccurate. File Changes: Due to the fact that the file forms part of the JTZU (Java Time Zone Updates) provided by the operating system vendor, I am unable to create and test proposed changes. Also, there are quite a few changes required and I don't want to spend hours making these changes if they're not going to be applied. I ask for your advice on how to proceed with this. I am happy to work with you to produce a complete set of revised rules if you decide to go ahead with this proposal. We will need to change Aus, AW, AS, AT, AV and AN rules and their corresponding zone formats to use the 'E%sT' format. Thanks for your time and assistance Mick Johnston Dept: CGL - IT ES Supply Chain * L4 Bourke St. Melbourne (ILS Support) * (03) 9635 4457 This email and any attachments may contain privileged and confidential information and are intended for the named addressee only. If you have received this e-mail in error, please notify the sender and delete this e-mail immediately. Any confidentiality, privilege or copyright is not waived or lost because this e-mail has been sent to you in error. It is your responsibility to check this e-mail and any attachments for viruses. No warranty is made that this material is free from computer virus or any other defect or error. Any loss/damage incurred by using this material is not the sender's responsibility. The sender's entire liability will be limited to resupplying the material.

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