September 2009 - 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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corrected DST data Switzerland 1941 and 1942, final report
by Alois Treindl Aug. 25, 2011

Aug. 25, 2011

Hello I have researched the DST usage in Switzerland during the 1940ies. As I wrote in an earlier message, I suspected the current tzdata values to be wrong. This is now verified. I have found copies of the original ruling by the Swiss Federal government, in 'Eidgenössische Gesetzessammlung 1941 and 1942' (Swiss federal law collection) and attach GIF copies of the two pages for 1941. DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am. DST began on Monday, 4 May 1942 at 01:00 am DST ended on Monday, 5 Oct 1942 at 02:00 am There was no DST in 1940, I have checked the law collection carefully. It is also indicated by the fact that the 1942 entry in the law collection points back to 1941 as a reference, but no reference to any other years are made. Newspaper articles I have read in the archives on 6 May 1941 reported about the introduction of DST (Sommerzeit in German) during the previous night as an absolute novelty, because this was the first time that such a thing had happened in Switzerland. I have also checked 1916, because one book source (Gabriel, Traite de l'heure dans le monde) claims that Switzerland had DST in 1916. This is false, no official document could be found. Probably Gabriel got misled by references to Germany, which introduced DST in 1916 for the first time. The tzdata rules for Switzerland must be changed to: Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - The 1940 rules must be deleted. One further detail for Switzerland, which is probably out of scope for most users of tzdata: The zone file Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 0:29:44 - BMT 1894 Jun #Bern Mean Time 1:00 Swiss CE%sT 1981 1:00 EU CE%sT describes all of Switzerland correctly, with the exception of the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not follow Bern Mean Time but kept its own local mean time. To represent this, an extra zone would be needed. Two GIF files are attached. best regards Alois -- || Alois Treindl, Astrodienst AG, mailto:alois@astro.com || Zollikon/Zurich, Switzerland || Free astrological charts at http://www.astro.com/ || SWISS EPHEMERIS Free Edition at http://www.astro.com/swisseph/

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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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tzdata2009m.tar.gz
by Olson, Arthur David (NIH/NCI) [E] Oct. 12, 2009

Oct. 12, 2009

The file... ftp://elsie.nci.nih.gov/pub/tzdata2009m.tar.gz ...is now available; this reflects the changes circulated last week on the time zone mailing list (added commentary for Argentina and a change to the end of DST in 2009 in Pakistan). I'll wait for reports on what actually happens in Bangladesh on October 1 before making any changes there, but a tzdata2009n can be expected sometime within a month. --ado

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Pakistan confirmed back to ST on Oct 1, Bangladesh not
by Alexander Krivenyshev Oct. 8, 2009

Oct. 8, 2009

According to Associated Press Of Pakistan, it is confirmed that Pakistan clocks across the country would be turned back by an hour from October 1, 2009. "Clocks to go back one hour from 1 Oct" http://www.app.com.pk/en_/index.php? option=com_content&task=view&id=86715&Itemid=2 or http://www.worldtimezone.com/dst_news/dst_news_pakistan07.htm Also, Bangladesh won't go back to Standard Time from October 1, 2009, instead it will continue DST measure till the cabinet makes a decision. Following report by same newspaper- "The Daily Star Friday": "DST change awaits cabinet decision- Clock won't go back by 1-hr from Oct 1" http://www.thedailystar.net/newDesign/news-details.php?nid=107021 or http://www.worldtimezone.com/dst_news/dst_news_bangladesh04.html Alexander Krivenyshev, http://www.worldtimezone.com

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proposed time zone package changes: Pakistan DST end; Argentina comment
by Arthur David Olson Sept. 28, 2009

Sept. 28, 2009

Below find proposed time zone packages for "asia" (end of DST in Pakistan in 2009, as provided by Petr Machata with very slight normalization) and "southamerica" (adding comments on the situation in Argentina for 2009-2010 from Alexander Krivenyshev and yours truly). If no problems are found, expect these changes to show up in the ftpable archive on 2009-09-28. --ado ------- asia ------- *** /tmp/geta29860 Tue Sep 22 15:05:39 2009 --- /tmp/getb29860 Tue Sep 22 15:05:39 2009 *************** *** 1,5 **** # <pre> ! # @(#)asia 8.40 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)asia 8.41 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 1674,1681 **** # advance clocks in the country by one hour from April 15 to # conserve energy" ! # From Arthur David Olson (2009-04-10): ! # Assume for now that Pakistan will end DST in 2009 as it did in 2008. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Pakistan 2002 only - Apr Sun>=2 0:01 1:00 S --- 1674,1688 ---- # advance clocks in the country by one hour from April 15 to # conserve energy" ! # From Steffen Thorsen (2009-09-17): ! # "The News International," Pakistan reports that: "The Federal ! # Government has decided to restore the previous time by moving the ! # clocks backward by one hour from October 1. A formal announcement to ! # this effect will be made after the Prime Minister grants approval in ! # this regard." ! # <a href="http://www.thenews.com.pk/updates.asp?id=87168"> ! # http://www.thenews.com.pk/updates.asp?id=87168 ! # </a> # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Pakistan 2002 only - Apr Sun>=2 0:01 1:00 S *************** *** 1683,1689 **** Rule Pakistan 2008 only - Jun 1 0:00 1:00 S Rule Pakistan 2008 only - Nov 1 0:00 0 - Rule Pakistan 2009 only - Apr 15 0:00 1:00 S ! Rule Pakistan 2009 only - Nov 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Karachi 4:28:12 - LMT 1907 5:30 - IST 1942 Sep --- 1690,1696 ---- Rule Pakistan 2008 only - Jun 1 0:00 1:00 S Rule Pakistan 2008 only - Nov 1 0:00 0 - Rule Pakistan 2009 only - Apr 15 0:00 1:00 S ! Rule Pakistan 2009 only - Oct 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Karachi 4:28:12 - LMT 1907 5:30 - IST 1942 Sep ------- southamerica ------- *** /tmp/geta29962 Tue Sep 22 15:13:41 2009 --- /tmp/getb29962 Tue Sep 22 15:13:41 2009 *************** *** 1,5 **** # <pre> ! # @(#)southamerica 8.36 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)southamerica 8.37 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 397,403 **** --- 397,433 ---- # is that "The province will most likely follow the next daylight saving schedule, # which is planned for the second Sunday in October." + # From Alexander Krivenyshev (2009-09-19): + # Some Argentinian Provinces (Buenos Aires, Entre Ríos) are opposing to the + # Daylight Saving Time for the 2009-2010 season. # + # (Spanish) + # "El cambio de huso horario en Entre Ríos deberá ser aprobado por la + # Legislatura": + # <a href="http://www.analisisdigital.com.ar/noticias.php?ed=1&di=0&no=110168"> + # http://www.analisisdigital.com.ar/noticias.php?ed=1&di=0&no=110168 + # </a> + # English translation - "The time zone change in Entre Rios must be approved by + # the Legislature." + # + # (Spanish) + # "Mar del Plata no quiere cambiar la hora." + # <a href="http://www.mensajeroweb.com.ar/index.php?x=nota/33861/1/mar-del-plata-no-qu…"> + # http://www.mensajeroweb.com.ar/index.php?x=nota/33861/1/mar-del-plata-no-qu… + # </a> + # English translation - "Mar del Plata is not to change the time" + # + # or + # (some English translation) + # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina07.html"> + # http://www.worldtimezone.com/dst_news/dst_news_argentina07.html + # </a> + + # From Arthur David Olson (2009-09-22): + # "Mar del Plata no quiere cambiar la hora" translates to + # "Mar del Plata doesn't want to change the time" + # (less definitive than "is not to"). + # Zone NAME GMTOFF RULES FORMAT [UNTIL] # # Buenos Aires (BA), Capital Federal (CF),

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FW: days difference software
by Olson, Arthur David (NIH/NCI) [E] Sept. 27, 2009

Sept. 27, 2009

I'm forwarding this message from Mike Berger, 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: news [mailto:news@ger.gmane.org] On Behalf Of Mike -- EMAIL IGNORED Sent: Friday, September 25, 2009 11:01 To: tz(a)lecserver.nci.nih.gov Subject: days difference software I am looking for software in C or C++ for use in a Linux system that computes the number of days between two dates. It must work at lease from 1900 to present. Thanks for your advice,. Mike.

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days difference software
by Mike -- EMAIL IGNORED Sept. 25, 2009

Sept. 25, 2009

I am looking for software in C or C++ for use in a Linux system that computes the number of days between two dates. It must work at lease from 1900 to present. Thanks for your advice,. Mike.

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FW: Successor for the TZ database
by Olson, Arthur David (NIH/NCI) [E] Sept. 23, 2009

Sept. 23, 2009

I'm forwarding this message from Rami Goraly, who was not on the time zone mailing list when it was sent (Rami has since subscribed). --ado From: Rami Goraly [mailto:rami@scheduleonce.com] Sent: Thursday, September 17, 2009 3:32 To: Olson, Arthur David (NIH/NCI) [E] Subject: Successor for the TZ database Hi David, Please allow me to introduce myself. I am the founder of ScheduleOnce (www.scheduleonce.com) and www.daylight-savings-time.info It came to my attention that you are looking for a successor to manage the database and I wanted to have an initial discussion to explore if this is something that we may want to take on. I look forward to hearing from you. Best Regards, Rami -- Rami Goraly | ScheduleOnce | rami(a)scheduleonce.com Phone: +972.54.460.0194 www.scheduleonce.com

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FW: I found a broken link on your page: http://web.mit.edu/~netbsd/src/lib/libc/time/tz-link.htm
by Olson, Arthur David (NIH/NCI) [E] Sept. 23, 2009

Sept. 23, 2009

I'm forwarding this message from Caitlin Walters, 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: caitlin(a)studentsandteachers.org [mailto:caitlin@studentsandteachers.org] Sent: Monday, September 21, 2009 11:51 To: tz(a)lecserver.nci.nih.gov Subject: I found a broken link on your page: http://web.mit.edu/~netbsd/src/lib/libc/time/tz-link.htm Hi, I'm sorry to bother you, but my name is Caitlin Walters and I'm a Geography Teacher in a small school in New England. While I was doing some research in preparing a lesson plan, I noticed that on this page...http://web.mit.edu/~netbsd/src/lib/libc/time/tz-link.htm, you have a link to http://www.phys.uu.nl/~vgent/idl/idl.htm. I don't think that page exists any longer, or maybe the site was down when I tried it. In my research I found this page...http://www.watch-inc.com/articles/historyoftheinternational.html, which has some very good resources and information on the international date line. I think it could make a good addition, or replacement of the link that didn't work, for your page. Hope this helps and sorry again to be a bother. Thanks! Caitlin :)

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