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Time zone file naming scheme
by Stephen Colebourne April 27, 2010

April 27, 2010

As spec lead of JSR-310, the Java effort to enhance dates and times, I'm encoding TZDB data. In order to represent the different versions of the data, I'm using the tzdb naming scheme or year followed by letter, eg. 2010i. This version number is sorted alphabetically. Obviously, it is possible that there might be more than 26 releases of the data in one year. In order to maintain the alphabetical sort order, I'd like this list to determine a strategy for the unlikely event that this situation occurs. For example: 2010a 2010z 2010za 2010zb If the list does not arrange a strategy (and define it in the theory document), then JSR-310, or future maintainers, will have to make up our own approach for numbering the 27th and onwards releases. Opinions? thanks Stephen

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Subscription request
by tojo.mathew＠nokia.com April 23, 2010

April 23, 2010

I would like to subscribe to this mailing list. Best Regards, Tojo Mathew

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Bahía de Banderas (Mexican state of Nayarit) changed time zone UTC-7 to UTC-6
by Alexander Krivenyshev April 21, 2010

April 21, 2010

According to news, Bahía de Banderas (Mexican state of Nayarit) changed time zone UTC-7 to new time zone UTC-6 on Apriul 4, 2010 (to share the same time zone as nearby city Puerto Vallarta, Jalisco). (Spanish) Bahía de Banderas homologa su horario al del centro del país, a partir de este domingo http://www.nayarit.gob.mx/notes.asp?id=20748 Bahía de Banderas homologa su horario con el del Centro del País http://www.bahiadebanderas.gob.mx/principal/index.php? option=com_content&view=article&id=261:bahia-de-banderas-homologa-su-horario- con-el-del-centro-del-pais&catid=42:comunicacion-social&Itemid=50 (English) Puerto Vallarta and Bahía de Banderas: One Time Zone http://virtualvallarta.com/puertovallarta/puertovallarta/localnews/2009-12-… Puerto-Vallarta-and-Bahia-de-Banderas-One-Time-Zone.shtml or http://www.worldtimezone.com/dst_news/dst_news_mexico08.html "Mexico's Senate approved the amendments to the Mexican Schedule System that will allow Bahía de Banderas and Puerto Vallarta to share the same time zone ..." Alexander Krivenyshev, http://www.worldtimezone.com

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user-friendly time zone list
by Douglass Davis April 20, 2010

April 20, 2010

Hello All, I am attempting to find a user-friendly list of time zones for users to select their current time zone. It would have common names that timezones are referred to, such as Eastern Time (US and Canada), and/or city names. This list should map the text to a time zone name such as "America/New_York." It would also remove multiple listings for what the user thinks of as the same time zone. Does any one know of such a list? If not, I would like to create one. One thing that perhaps would help is if I could group many timezones by if they are implemented exactly the same way in 2010. This would make it easy to remove multiple listings for the "same" time zone. Also, if there are any time zones that are strictly there for historical purposes, I would like to not have them in the list. I will put this list in the public domain if any other application developers want to use it. Please let me know if you have any suggestions as far as where I could find this list, or how I could create it. Thanks. -- Douglass Davis Applications Developer UNC - General Administration

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FW: Creating an alias to America/Sao_Paulo
by Olson, Arthur David (NIH/NCI) [E] April 20, 2010

April 20, 2010

I'm forwarding this message from Leonardo Ferreira, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. (There are no plans to add an America/Brasilia alias. If it's any consolation, the United States is in a similar boat--the time zone I'm in is named America/New_York rather than America/Washington_DC. --ado From: Leonardo Ferreira Fontenelle [mailto:leonardof@gnome.org] Sent: Sunday, April 18, 2010 10:36 To: tz(a)lecserver.nci.nih.gov Subject: Creating an alias to America/Sao_Paulo I am a GNOME trasnlator, and I received an e-mail from an user about the choice of the São Paulo city as the name for the corresponding time zone. I understand this is the most populous city, but he made a good point: in Brazil we call this time zone "Brasília time". Brasília has been our country capital for 50 years, since the government finished building it for this specific purpose. There's no chance the city will lose this the status for the next decades, because no one has any good reason for that. So, I'd like to know if there's any chance of creating America/Brasilia as an alias to America/Sao_Paulo. Thanks!

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data2010i
by Olson, Arthur David (NIH/NCI) [E] April 19, 2010

April 19, 2010

The file... ftp://elsie.nci.nih.gov/pub/tzdata2010i.tar.gz ...is now available; this reflects the changes circulated last week on the time zone mailing list (with the end of DST in Morocco on 2010-08-08). --ado

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Creating an alias to America/Sao_Paulo
by Leonardo Ferreira Fontenelle April 18, 2010

April 18, 2010

I am a GNOME trasnlator, and I received an e-mail from an user about the choice of the São Paulo city as the name for the corresponding time zone. I understand this is the most populous city, but he made a good point: in Brazil we call this time zone "Brasília time". Brasília has been our country capital for 50 years, since the government finished building it for this specific purpose. There's no chance the city will lose this the status for the next decades, because no one has any good reason for that. So, I'd like to know if there's any chance of creating America/Brasilia as an alias to America/Sao_Paulo. Thanks!

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proposed time zone package changes (Morocco; Taipei; San Luis)
by Arthur David Olson April 16, 2010

April 16, 2010

Below are proposed time zone packages; here's a summary: africa Add Morocco DST in 2010. asia Add Taipei DST in 1979; remove Taipei DST in 1980. southamerica San Luis on "permanent" DST as of 2010. If no problems are found, these will show up on the ftp site on 2010-04-19. --ado diff -r -c old/africa new/africa *** old/africa Mon Apr 5 09:58:55 2010 --- new/africa Wed Apr 14 08:15:37 2010 *************** *** 1,5 **** # <pre> ! # @(#)africa 8.24 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)africa 8.25 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 680,685 **** --- 680,700 ---- # http://www.worldtimezone.com/dst_news/dst_news_morocco03.html # </a> + # From Steffen Thorsen (2010-04-13): + # Several news media in Morocco report that the Ministry of Modernization + # of Public Sectors has announced that Morocco will have DST from + # 2010-05-02 to 2010-08-08. + # + # Example: + # <a href="http://www.lavieeco.com/actualites/4099-le-maroc-passera-a-l-heure-d-ete-gm…"> + # http://www.lavieeco.com/actualites/4099-le-maroc-passera-a-l-heure-d-ete-gm… + # </a> + # (French) + # Our page: + # <a href="http://www.timeanddate.com/news/time/morocco-starts-dst-2010.html"> + # http://www.timeanddate.com/news/time/morocco-starts-dst-2010.html + # </a> + # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Morocco 1939 only - Sep 12 0:00 1:00 S *************** *** 701,706 **** --- 716,723 ---- Rule Morocco 2008 only - Sep 1 0:00 0 - Rule Morocco 2009 only - Jun 1 0:00 1:00 S Rule Morocco 2009 only - Aug 21 0:00 0 - + Rule Morocco 2010 only - May 2 0:00 1:00 S + Rule Morocco 2010 only - Aug 22 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26 0:00 Morocco WE%sT 1984 Mar 16 diff -r -c old/asia new/asia *** old/asia Mon Apr 5 09:58:55 2010 --- new/asia Wed Apr 14 08:15:38 2010 *************** *** 1,4 **** ! # @(#)asia 8.59 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,4 ---- ! # @(#)asia 8.60 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 566,571 **** --- 566,593 ---- # was still controlled by Japan. This is hard to believe, but we don't # have any other information. + # From smallufo (2010-04-03): + # According to Taiwan's CWB, + # <a href="http://www.cwb.gov.tw/V6/astronomy/cdata/summert.htm"> + # http://www.cwb.gov.tw/V6/astronomy/cdata/summert.htm + # </a> + # Taipei has DST in 1979 between July 1st and Sep 30. + + # From Arthur David Olson (2010-04-07): + # Here's Google's translation of the table at the bottom of the "summert.htm" page: + # Decade Name Start and end date + # Republic of China 34 years to 40 years (AD 1945-1951 years) Summer Time May 1 to September 30 + # 41 years of the Republic of China (AD 1952) Daylight Saving Time March 1 to October 31 + # Republic of China 42 years to 43 years (AD 1953-1954 years) Daylight Saving Time April 1 to October 31 + # In the 44 years to 45 years (AD 1955-1956 years) Daylight Saving Time April 1 to September 30 + # Republic of China 46 years to 48 years (AD 1957-1959) Summer Time April 1 to September 30 + # Republic of China 49 years to 50 years (AD 1960-1961) Summer Time June 1 to September 30 + # Republic of China 51 years to 62 years (AD 1962-1973 years) Stop Summer Time + # Republic of China 63 years to 64 years (1974-1975 AD) Daylight Saving Time April 1 to September 30 + # Republic of China 65 years to 67 years (1976-1978 AD) Stop Daylight Saving Time + # Republic of China 68 years (AD 1979) Daylight Saving Time July 1 to September 30 + # Republic of China since 69 years (AD 1980) Stop Daylight Saving Time + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Taiwan 1945 1951 - May 1 0:00 1:00 D Rule Taiwan 1945 1951 - Oct 1 0:00 0 S *************** *** 576,583 **** Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D Rule Taiwan 1974 1975 - Oct 1 0:00 0 S ! Rule Taiwan 1980 only - Jun 30 0:00 1:00 D ! Rule Taiwan 1980 only - Sep 30 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Taipei 8:06:00 - LMT 1896 # or Taibei or T'ai-pei 8:00 Taiwan C%sT --- 598,606 ---- Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D Rule Taiwan 1974 1975 - Oct 1 0:00 0 S ! Rule Taiwan 1979 only - Jun 30 0:00 1:00 D ! Rule Taiwan 1979 only - Sep 30 0:00 0 S ! # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Taipei 8:06:00 - LMT 1896 # or Taibei or T'ai-pei 8:00 Taiwan C%sT diff -r -c old/southamerica new/southamerica *** old/southamerica Mon Apr 5 09:58:55 2010 --- new/southamerica Wed Apr 14 08:15:38 2010 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.43 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.44 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 437,442 **** --- 437,463 ---- # of the country calls it "ART". # ... + # From Alexander Krivenyshev (2010-04-09): + # According to news reports from El Diario de la Republica Province San + # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time + # after April 11, 2010--will continue to have same time as rest of + # Argentina (UTC-3) (no DST). + # + # Confirmaron la prórroga del huso horario de verano (Spanish) + # <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view…"> + # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view… + # </a> + # or (some English translation): + # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> + # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html + # </a> + + # From Mariano Absatz (2010-04-12): + # yes...I can confirm this...and given that San Luis keeps calling + # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" + # rules...San Luis is still using "Western ARgentina Time" and it got + # stuck on Summer daylight savings time even though the summer is over. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] # # Buenos Aires (BA), Capital Federal (CF), *************** *** 570,577 **** # # San Luis (SL) ! Rule SanLuis 2008 max - Mar Sun>=8 0:00 0 - ! Rule SanLuis 2007 max - Oct Sun>=8 0:00 1:00 S Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May --- 591,598 ---- # # San Luis (SL) ! Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - ! Rule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May

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Tunisia Time Correction
by Rovinder Chopra April 15, 2010

April 15, 2010

Hiya, http://www.timeanddate.com/worldclock/city.html?n=253 show Tunisia time differently to http://convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP?For=Tunis+Tun… Some sources say that they abandoned daylight savings in 2009. Thanks, Rov. Linedata Services (UK) Ltd Registered Office: Bishopsgate Court, 4-12 Norton Folgate, London, E1 6DB Registered in England and Wales No 3027851 VAT Reg No 778499447

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tzdata question
by bobgerman＠bobgerman.com April 14, 2010

April 14, 2010

Hello, I hope this is the right place for this question. A coworker suggested filing a bug report, but I'm not confident enough in what I'm seeing to do so. I recently updated two servers from CentOS 5.2 to 5.4. In the process, of course, the tzdata package was updated. Shortly after updating, my boss began barking about a server with the wrong timezone showing up in our logging. He's very uptight about that sort of thing. We log everything with UTC religiously because we have servers all over the planet. Further investigation revealed that on these two particular servers, which had been updated with CentOS 5.4 (and the tzdata package), we could NOT change the time by the usual means (rm /etc/localtime; ln -s /usr/share/zoneinfo/UTC /etc/localtime). This works everywhere else in our datacenters, so we were confused. Upon looking closer, it appears the UTC file installed by the latest tzdata package is not a UTC file. Running strings on it reveals EST5EDT. I don't know if this is a problem at the source, or a packaging problem somewhere along the stream. I'm sending it to this email address because this is what I found in the README for the tzdata package. Please feel free to correct me in any way that will help me stop my boss from barking, as this is every information technologist's duty in life. Thank you for your brain cycles.

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