- tz - lists.iana.org

Tomsk, Russia now GMT+6, not GMT+7.
by Vadim Ostranitsyn May 1, 2002

May 1, 2002

Hi! Since 3:00am 1 May 2002 city Tomsk and Tomskaya oblast' has changed his timezone. Now Tomsk has GMT+6 timezone (as in Novosibirsk) instead of GMT+7. Act No.246 of Government of Russia (2002-04-17). p.s. Sorry for my awful english. -- Vadim Ostranitsyn Evil's flowers, VO45-RIPE, VO15-RIPN Tomsk State University, Russia

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RE: still more problems with the formatting in the tz datafiles
by Olson, Arthur David (NCI) April 29, 2002

April 29, 2002

The zic manual page notes that Input lines are made up of fields. Fields are separated from one another by any number of white space characters. so there's nothing "wild" about the format of the files. --ado -----Original Message----- From: Tony Blackmon [mailto:tblackmon@wilbursmith.com] Sent: Friday, April 26, 2002 2:54 PM To: tz(a)elsie.nci.nih.gov Subject: still more problems with the formatting in the tz datafiles i am finding more and more of these. each header comment is clearly marked with tabs delimiting the file, but when you get into the guts of the data some of these tabs are spaces. how do you parse the tzdata text files if the formatting is not correct? as i stated before, i am working under a windows environment, but still want to handle timezone conversion and client timezone selection using the tzcode data. it perplexes me as to how this all works with the data files formatted so wildly. is it meant to be this way or is all of this accidental or unnoticed? --fluid

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FW: still more problems with the formatting in the tz datafiles
by Olson, Arthur David (NCI) April 29, 2002

April 29, 2002

Tony Blackmon is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Tony Blackmon [mailto:tblackmon@wilbursmith.com] Sent: Friday, April 26, 2002 2:54 PM To: tz(a)elsie.nci.nih.gov Subject: still more problems with the formatting in the tz datafiles i am finding more and more of these. each header comment is clearly marked with tabs delimiting the file, but when you get into the guts of the data some of these tabs are spaces. how do you parse the tzdata text files if the formatting is not correct? as i stated before, i am working under a windows environment, but still want to handle timezone conversion and client timezone selection using the tzcode data. it perplexes me as to how this all works with the data files formatted so wildly. is it meant to be this way or is all of this accidental or unnoticed? --fluid

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Time zones?
by MrPek＠aol.com April 26, 2002

April 26, 2002

Hi Im trying to get information on time zones and daylight saving times for cities around the world. Do you have such information, such as the time zone offsets and when the daylight saving time is introduced and removed each year for cites? Thanks for your help Greg Wilson.

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still more problems with the formatting in the tz datafiles
by Tony Blackmon April 26, 2002

April 26, 2002

i am finding more and more of these. each header comment is clearly marked with tabs delimiting the file, but when you get into the guts of the data some of these tabs are spaces. how do you parse the tzdata text files if the formatting is not correct? as i stated before, i am working under a windows environment, but still want to handle timezone conversion and client timezone selection using the tzcode data. it perplexes me as to how this all works with the data files formatted so wildly. is it meant to be this way or is all of this accidental or unnoticed? --fluid

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Re: dislocated time/space regions
by Alex Livingston April 10, 2002

April 10, 2002

Hi Rives and others. The time kept in the three "towns" you mention is half way between the times in Western Australia (WA) and South Australia (SA) only when South Australia is NOT observing daylight-saving time. When it is, these towns are 1&3/4 hours behind SA, but only 3/4 of an hour (less than half as much) ahead of WA. This on-the-quarter hour offset must make it a pain in the neck working out from local time what the times in WA and SA are (not to mention the rest of the world, except Nepal and the Chatham Islands), and it would seem to me much more sensible and convenient if their clocks were kept a whole hour ahead of WA (making them 9 hours ahead of UTC and 21 hours ahead of the date line, the same as Japan and eastern Indonesia). If they did that, they would be 1&1/2 hours behind SA during its daylight-saving period (only a half-as-much again greater offset than from WA) and 1/2 an hour behind for the rest of the year. This would also make time-conversion arithmetic much easier for almost everywhere on earth. Sorry; I've strayed into suggestion/prescription (as opposed to description) again. Rives: I'd love to know how I can get in touch with the sheriff of Madura, so I can put my suggestion to him/her. (Am I right that Nepal and the Chatham Islands are the only other surviving quarter-hour-offset zones in the world? The Chatham Islands in particular are a basket case, having simply added half an hour to their time along with the rest of New Zealand in 1947, thus breaking their connection with mean solar time anyway, and then adopting daylight saving as well! They "should" either go forward 1/4 of an hour or back 3/4 of an hour.) :Alex -------------------------------------------------------------- Alex Livingston Macintosh & Lotus Notes Support, Information Technology Australian Graduate School of Management UNSW SYDNEY NSW 2052 Australia Tel: +61 2 9931-9264 Fax: +61 2 9931-9349 Email: alex(a)agsm.edu.au Web: http://www.agsm.edu.au The Australian Graduate School of Management is a School of both The University of Sydney & The University of New South Wales. CRICOS Provider Number: 00098G Rives McDow <rmcdow@entel To: elsie <tz(a)elsie.nci.nih.gov> es.com> cc: Subject: dislocated time/space regions 2002-04-10 01:44 The most interesting region I have found consists of three towns on the southern coast of Australia, population 10 at last report, along with 50,000 sheep, about 100 kilometers long and 40 kilometers into the continent. The primary town is Madura, with the other towns being Mundrabilla and Eucla. According to the sheriff of Madura, the residents got tired of having to change the time so often, as they are located in a strip overlapping the border of South Australia and Western Australia. South Australia observes daylight saving time; Western Australia does not. The two states are one and a half hours apart. The residents decided to forget about this nonsense of changing the clock so much and set the local time 20 hours and 45 minutes from the international date line, or right in the middle of the time of South Australia and Western Australia. As it only affects about 10 people and tourists staying at the Madura Motel, it has never really made as big an impact as Broken Hill. However, as tourist visiting there or anyone calling the local sheriff will attest, they do keep time in this way. There are quite a few of these types of regions in the world; I'll try and post them as I get the time. Rives McDow

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Principalities etc.
by Oscar van Vlijmen April 9, 2002

April 9, 2002

Other regions which are ignored by many: Sealand ---------- Sealand was founded as a sovereign principality in 1967 in international waters, six miles off the eastern shores of Britain. 51.53N 01.28E. Local time: probably like UK. http://www.sealandgov.com/ Seborga ---------- Principato di Seborga. A principality since 1079, officiallly still not a part of Italy. Located in Liguria, close to the French border. Local time: probably like Italy. http://www.seborga.org/ Transnistria ---------------- Part of Moldova, a former USSR state. Some Ukrainians and Russians have proclaimed a Republic of Transnistria. Tiraspol', 46.85N 29.63E. Local time: probably like Moldova. Facts & figures: http://www.inyourpocket.com/Moldova/Moldova_basic.shtml http://www.cia.gov/cia/publications/factbook/geos/md.html Oscar van Vlijmen 2002-04-09

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FW: Daylight Saving Time - Palestine
by Olson, Arthur David (NCI) April 8, 2002

April 8, 2002

Michael Douma is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Michael Douma [mailto:doumalist@michaeldouma.com] Sent: Monday, April 08, 2002 2:49 PM To: calNDR-L(a)ECUMAIL7.ECU.EDU Cc: Carl D. Goldin; tz(a)elsie.nci.nih.gov Subject: Re: Daylight Saving Time - Palestine Greetings, Do you know of groups (other than the Palestinians) that have decided to use THEIR OWN DST dates, independent of their surrounding country? I am interested in both past and present. I am in discussions right now with a gentleman named Carl D. Goldin, about the observance of Daylight Saving Time in the world. He has pointed out that if I list the Palestinians on a web site about DST, that it is only fair to list other non-country entities. I included information from Amos Shapir in the TZ archive about Palestine. http://webexhibits.org/daylightsaving/g.html I don't think this has ever com up on the list, and I have skimmed the TZ archives. Michael On Monday, April 8, 2002, at 01:53 PM, Carl D. Goldin wrote: > 1) My objection, and that of the others who wrote you on the subject, > is that there is currently no country by the name of "Palestine". So, > it is inaccurate (and an offensive political stattement) to include it > in your list of "countries", just as it would be to include disputed > territories such as the Kashmir, aspiring nations such as the Basque > Republic, former nations such as Rhodesia, or unclassifiable entities > such as Aryan Nations. > ------------------------------------------- Michael Douma Editor, WebExhibits http://webexhibits.org/

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Re: Daylight Saving Time - Palestine
by Michael Douma April 8, 2002

April 8, 2002

Greetings, Do you know of groups (other than the Palestinians) that have decided to use THEIR OWN DST dates, independent of their surrounding country? I am interested in both past and present. I am in discussions right now with a gentleman named Carl D. Goldin, about the observance of Daylight Saving Time in the world. He has pointed out that if I list the Palestinians on a web site about DST, that it is only fair to list other non-country entities. I included information from Amos Shapir in the TZ archive about Palestine. http://webexhibits.org/daylightsaving/g.html I don't think this has ever com up on the list, and I have skimmed the TZ archives. Michael On Monday, April 8, 2002, at 01:53 PM, Carl D. Goldin wrote: > 1) My objection, and that of the others who wrote you on the subject, > is that there is currently no country by the name of "Palestine". So, > it is inaccurate (and an offensive political stattement) to include it > in your list of "countries", just as it would be to include disputed > territories such as the Kashmir, aspiring nations such as the Basque > Republic, former nations such as Rhodesia, or unclassifiable entities > such as Aryan Nations. > ------------------------------------------- Michael Douma Editor, WebExhibits http://webexhibits.org/

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Help on time zone data
by Avery Chan April 7, 2002

April 7, 2002

Hi, I'm trying to parse the compiled (i.e.zic'd) time zone files. Is there a document indicating the exact structure of the files? I did a 'man tzfile' but it's not exact: NAME tzfile - time zone information SYNOPSIS #include <tzfile.h> DESCRIPTION The time zone information files used by tzset(3) begin with bytes reserved for future use, followed by six four- byte values of type long, written in a ``standard'' byte order (the high-order byte of the value is written first). These values are, in order: How many bytes is "...bytes..."? What would be most helpful is some code (preferably in C) showing how to parse the files. Also I looked at the rule files, and I sort of understand them, but I'm not too sure what the format is exactly as well as some of the syntax (e.g. what is 'Link')? Thanks, Avery -- At the back of the Daylight Saving scheme I detect the bony, blue-fingered hand of Puritanism, eager to push people into bed earlier, and get them up earlier, to make them healthy, wealthy and wise in spite of themselves. -- Robertson Davies, The Diary of Samuel Marchbanks I wish Daylight Saving Time would die. -- Avery Chan

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Time Zone converter
by Katie_Lunday＠capgroup.com April 5, 2002

April 5, 2002

I'm having trouble finding New Zealand time zones. I found one for Pacific/Auckland but it doesn't convert correctly so I'm not sure if that is a different Auckland from the one in New Zealand? If the other coordinate is US/Pacific the dates should be different because of the date line but the conversion with Pacific/Auckland has it on the same day as US/Pacific. Any suggestions? Thank you, Katie Lunday Capital International tel: 310/996-6175 fax: 310/996-6511 email: katie_lunday(a)capgroup.com

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tzcode2002c.tar.gz and tzdata2002c.tar.gz
by Olson, Arthur David (NCI) April 4, 2002

April 4, 2002

The files ftp://elsie.nci.nih.gov/pub/tzcode2002c.tar.gz and ftp://elsie.nci.nih.gov/pub/tzdata2002c.tar.gz are now available. These include the changes circulated by Paul Eggert last week on the time zone mailing list, and the change to zic.c to avoid creating symlinks to files that don't exist. --ado

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DST in Pakistan
by Jiri Kanak April 4, 2002

April 4, 2002

Hi All, I'm looking for zonefile for Pakistan with DST, which will be there for the first time this year. Can someone help me? Jiri -- ______ /_____/\ /____ \\ \ Jiri Kanak /_____\ \\ / System Engineer /_____/ \/ / / Sun Enterprise Services /_____/ / \//\ \_____\//\ / / Tel.: +420 - 2 - 33 00 93 90, 33 00 93 11 \_____/ / /\ / Fax.: +420 - 2 - 33 00 93 55 \_____/ \\ \ E-mail: jiri.kanak(a)sun.com \_____\ \\ \_____\/

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Best of Zones
by Gilbert C Healton April 2, 2002

April 2, 2002

For quite a few years now I have had documentation on the web for software developers involved with calendars, dates, times, and time zones. While the original motivation for this document was Y2K avoidance and correction the document goes a lot deeper into proper use of dates and times. After some lurking here it just struck me that some readers in this group might have some good ideas about ways programmers frequently go wrong with time zone processing or good ways of processing zones that are too little used. Any worthy ides not already covered by my document that would be useful to programmers are solicited. The Best of Dates, the Worst of Dates. http://www.exit109.com/~ghealton/y2k/yrexamples.html ---------------------------------------------------------------------- ghealton(a)exit109.com http://www.exit109.com/~ghealton/ ---------------------------------------------------------------------- Computers are like air conditioners: they don't work well when Windows are left open

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FW: Estonia entry
by Olson, Arthur David (NCI) April 2, 2002

April 2, 2002

Denis Afonin is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Denis Afonin [mailto:dfa@solo.ee] Sent: Sunday, March 31, 2002 2:04 PM To: tz(a)elsie.nci.nih.gov Subject: Estonia entry Hello, Since March 31, 2002 1:00 UTC summertime is entered again in Estonia. Here is patch for # @(#)europe 7.81 Plus, link more cities. --- europe.orig Mon Jan 28 19:56:02 2002 +++ europe Sun Mar 31 21:41:48 2002 @@ -65,6 +65,7 @@ # ... # Estonia ... uses EU dates but not at 01:00 GMT, they use midnight GMT. # I don't think they know yet what they will do from 1996 onwards. +# Since March 31, 2002 Estonia uses right EU rules. # ... # There shouldn't be any [current members who are not using EU rules]. # A Directive has the force of law, member states are obliged to enact @@ -853,6 +854,9 @@ # no. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all # the year round. The regulation is effective 1999-11-01. +# From Denis Afonin <dfa(a)solo.ee> (2002-03-31): +# March 31, 2002: Summertime is entered in Estonia. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time @@ -865,7 +869,11 @@ 2:00 1:00 EEST 1989 Sep 24 2:00s 2:00 C-Eur EE%sT 1998 Sep 22 2:00 EU EE%sT 1999 Nov 1 - 2:00 - EET + 2:00 - EET 2002 Mar 31 1:00 + 2:00 EU EE%sT + +Link Europe/Tallinn Europe/Tartu +Link Europe/Tallinn Europe/Maardu # Finland #

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FW: Daylight Savings Time in Mexico
by Olson, Arthur David (NCI) April 2, 2002

April 2, 2002

Henry Ivy is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: IVY,HENRY (HP-Roseville,ex1) [mailto:henry_ivy@am.exch.hp.com] Sent: Monday, April 01, 2002 9:15 PM To: 'tz(a)elsie.nci.nih.gov' Cc: VEGA,HORACIO (HP-Mexico,ex1); GRIMM,GREG (HP-Roseville,ex1) Subject: Daylight Savings Time in Mexico Dear Sirs; I work for Hewlett-Packard in Roseville, CA, USA. One of my assignments is to maintain daylight savings time schedules in special databases for world wide global support. I admire your work. I look forward to any comments that you may have about the following information. Horacio Vega works for HP in Mexico. He brought the following decree to my attention. His Spanish is better than mine. He has told me that Mexico City will use daylight savings time, along with most of Mexico. http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html#decreto I started with the tzdata2002b version of the data. The rules for Mexico Daylight Savings Time should have the 2001 rules commented out, and the previous two lines reset to run to max. The time zone rules for America/Mexico_City should have the last line commented out, and the previous line reset to not expire. The time zone rules for America/Tijuana should have the last line commented out, and the previous line reset to not expire. --------------- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S Rule Mexico 1940 only - Dec 9 0:00 1:00 D Rule Mexico 1941 only - Apr 1 0:00 0 S Rule Mexico 1943 only - Dec 16 0:00 1:00 W Rule Mexico 1944 only - May 1 0:00 0 S Rule Mexico 1950 only - Feb 12 0:00 1:00 D Rule Mexico 1950 only - Jul 30 0:00 0 S Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 max - Oct lastSun 2:00 0 S # Rule Mexico 2001 max - May Sun>=1 2:00 1:00 D # Rule Mexico 2001 max - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Quintana Roo Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 -6:00 Mexico C%sT # Campeche, Yucatan Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT # Coahuila, Durango, Nuevo Leon, Tamaulipas Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 Mexico C%sT # -6:00 - CST # Chihuahua Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT # Sonora Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 1999 -7:00 - MST # Baja California Sur, Nayarit, Sinaloa Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT # Baja California Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 -8:00 - PST 1942 Apr 24 -8:00 1:00 PWT 1945 Nov 12 -8:00 - PST 1948 Apr 5 -8:00 1:00 PDT 1949 Jan 14 -8:00 - PST 1954 -8:00 CA P%sT 1961 -8:00 - PST 1976 -8:00 US P%sT 1996 -8:00 Mexico P%sT # -8:00 US P%sT # From Paul Eggert (2001-03-05): # Formerly there was an America/Ensenada zone, which differed from # America/Tijuana only in that it did not observe DST from 1976 # through 1995. This was as per Shanks. However, Guy Harris reports # that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and # Tijuana observe DST," which contradicts Shanks but does imply that # DST-observance was a town-by-town matter back then. This concerns # data after 1970 so most likely there should be at least one Zone # other than America/Tijuana for Baja, but it's not clear yet what its # name or contents should be. # # Revillagigedo Is # no information ############################################################################ ### --------------- Regards, Hank Ivy | Henry (Hank) B. Ivy PHONE : (916)785-1392 | | FAX : (916)785-9238 | | ecardfile : https://ecardfile.com/id/hank_ivy | | Hewlett-Packard Company USENET: hivy(a)rosemail.rose.hp.com | | 8000 Foothills Boulevard, MS 5617 | | Roseville, California 95747-5617 |

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symlinks
by Olson, Arthur David (NCI) April 2, 2002

April 2, 2002

Lacking consensus on the symlink problem, what I'd suggest for now is a change to zic.c that would only deal with the problem of creating symlinks to files that don't exist--see below. If making just this change for now is agreeable to folks, I'll update tzcode and tzdata once Paul Eggert weighs in with Paul's conclusions on what Estonia should look like. --ado *** 7.104/zic.c Tue Apr 2 09:58:10 2002 --- 7.107/zic.c Tue Apr 2 09:58:11 2002 *************** *** 1,6 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)zic.c 7.104"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 1,6 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)zic.c 7.107"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 620,626 **** result = link(fromname, toname); #if (HAVE_SYMLINK - 0) ! if (result != 0) { const char *s = tofile; register char * symlinkcontents = NULL; while ((s = strchr(s+1, '/')) != NULL) --- 620,628 ---- result = link(fromname, toname); #if (HAVE_SYMLINK - 0) ! if (result != 0 && ! access(fromname, F_OK) == 0 && ! !itsdir(fromname)) { const char *s = tofile; register char * symlinkcontents = NULL; while ((s = strchr(s+1, '/')) != NULL)

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Daylight Savings Time in Mexico
by IVY,HENRY (HP-Roseville,ex1) April 2, 2002

April 2, 2002

Dear Sirs; I work for Hewlett-Packard in Roseville, CA, USA. One of my assignments is to maintain daylight savings time schedules in special databases for world wide global support. I admire your work. I look forward to any comments that you may have about the following information. Horacio Vega works for HP in Mexico. He brought the following decree to my attention. His Spanish is better than mine. He has told me that Mexico City will use daylight savings time, along with most of Mexico. http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html#decreto I started with the tzdata2002b version of the data. The rules for Mexico Daylight Savings Time should have the 2001 rules commented out, and the previous two lines reset to run to max. The time zone rules for America/Mexico_City should have the last line commented out, and the previous line reset to not expire. The time zone rules for America/Tijuana should have the last line commented out, and the previous line reset to not expire. --------------- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S Rule Mexico 1940 only - Dec 9 0:00 1:00 D Rule Mexico 1941 only - Apr 1 0:00 0 S Rule Mexico 1943 only - Dec 16 0:00 1:00 W Rule Mexico 1944 only - May 1 0:00 0 S Rule Mexico 1950 only - Feb 12 0:00 1:00 D Rule Mexico 1950 only - Jul 30 0:00 0 S Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 max - Oct lastSun 2:00 0 S # Rule Mexico 2001 max - May Sun>=1 2:00 1:00 D # Rule Mexico 2001 max - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Quintana Roo Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 -6:00 Mexico C%sT # Campeche, Yucatan Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT # Coahuila, Durango, Nuevo Leon, Tamaulipas Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 Mexico C%sT # -6:00 - CST # Chihuahua Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT # Sonora Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 1999 -7:00 - MST # Baja California Sur, Nayarit, Sinaloa Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT # Baja California Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 -8:00 - PST 1942 Apr 24 -8:00 1:00 PWT 1945 Nov 12 -8:00 - PST 1948 Apr 5 -8:00 1:00 PDT 1949 Jan 14 -8:00 - PST 1954 -8:00 CA P%sT 1961 -8:00 - PST 1976 -8:00 US P%sT 1996 -8:00 Mexico P%sT # -8:00 US P%sT # From Paul Eggert (2001-03-05): # Formerly there was an America/Ensenada zone, which differed from # America/Tijuana only in that it did not observe DST from 1976 # through 1995. This was as per Shanks. However, Guy Harris reports # that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and # Tijuana observe DST," which contradicts Shanks but does imply that # DST-observance was a town-by-town matter back then. This concerns # data after 1970 so most likely there should be at least one Zone # other than America/Tijuana for Baja, but it's not clear yet what its # name or contents should be. # # Revillagigedo Is # no information ############################################################################ ### --------------- Regards, Hank Ivy | Henry (Hank) B. Ivy PHONE : (916)785-1392 | | FAX : (916)785-9238 | | ecardfile : https://ecardfile.com/id/hank_ivy | | Hewlett-Packard Company USENET: hivy(a)rosemail.rose.hp.com | | 8000 Foothills Boulevard, MS 5617 | | Roseville, California 95747-5617 |

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proposed tz changes for Pakistan, Estonia, Mexico, Paraguay, ...
by Paul Eggert March 27, 2002

March 27, 2002

Here are proposed changes to help keep the tz database up to date. Some changes noted below take effect as soon as this weekend. As usual, thanks to everyone who writes in and keeps us up-to-date. * Pakistan will observe daylight saving from the first Sunday after the first Saturday in April at 00:00 until October 15 at 00:00. (Thanks to Rives McDow for the heads-up, and to Jesper Norgaard for digging up a written reference, with different rules alas.) * Estonia will start observing daylight saving time again this year, using EU rules. (Thanks to Toomas Soome for this info.) * This year, Mexico will change back to using US daylight-saving rules. (Thanks to Jesper Norgaard Welen for this info.) * Starting next month, Paraguay observes DST from the first Sunday in September at 00:00 to the first Sunday in April at 00:00. (Thanks to Rives McDow for this info.) * Ujung Pandang has changed its name to Makassar. (Thanks to Priyadi Iman Nurcahyo for this info.) * Update Argentine historical time zone info, after reviewing an Argentine web site devoted to the subject, along with the corrections that Shanks made in his 5th edition. (Thanks to Javier Reinoso for the heads-up.) This results in the following changes: - No DST was observed from mid-1974 through mid-1988. - 1966/1967 DST ended on 1967-04-02, not 1967-04-01. - Argentine standard time was introduced 1894-10-31, not 1894-11-01. - Argentine standard time from 1894-10-31 through 1920-04-30 was -4:16:48.25, not -4:16:44. - Rosario and Cordoba have the same time zone history since 1970, so we should mark the America/Rosario Zone as obsolescent. - Many of the transition dates in 1991 and 1992 are incorrect. * It appears that there was widespread disagreement about the clocks in Argentina in 1991 and 1992. Record what Shanks writes, as comments, even though we may not agree with them. * Update the web page as follows: - Fix out-of-date URLs for Shanks's books, Russian time zones, Israeli announcements, Langley's notes, McCarthy & Klepczynski's proposal. - Fix out-of-date title for NTP. - Use briefer text for Pollastri's web page. (I still have a some minor changes queued up for Canada which I have not had time to review carefully, but they can wait.) =================================================================== RCS file: RCS/asia,v retrieving revision 2002.2 retrieving revision 2002.2.0.1 diff -pu -r2002.2 -r2002.2.0.1 --- asia 2002/01/28 17:56:02 2002.2 +++ asia 2002/03/25 06:42:59 2002.2.0.1 @@ -419,7 +419,7 @@ Zone Asia/Pontianak 7:17:20 - LMT 1908 M 7:30 - WIT 1964 8:00 - CIT 1988 Jan 1 7:00 - WIT -Zone Asia/Ujung_Pandang 7:57:36 - LMT 1920 +Zone Asia/Makassar 7:57:36 - LMT 1920 7:57:36 - MMT 1932 Nov # Macassar MT 8:00 - CIT 1942 Feb 9 9:00 - JST 1945 Aug @@ -1094,13 +1094,36 @@ Zone Asia/Muscat 3:54:20 - LMT 1920 4:00 - GST # Pakistan + +# From Rives McDow (2002-03-13): +# I have been advised that Pakistan has decided to adopt dst on a # +TRIAL basis for one year, starting 00:01 local time on April 7, 2002 # +and ending at 00:01 local time October 6, 2002. This is what I was # +told, but I believe that the actual time of change may be 00:00; the # +00:01 was to make it clear which day it was on. + +# From Paul Eggert (2002-03-15): +# Jesper Norgaard found this URL: +# http://www.pak.gov.pk/public/news/app/app06_dec.htm +# (dated 2001-12-06) which says that the Cabinet adopted a scheme "to # +advance the clocks by one hour on the night between the first # +Saturday and Sunday of April and revert to the original position on # +15th October each year". This agrees with McDow's 04-07 at 00:00, # +but disagrees about the October transition, and makes it sound like # +it's not on a trial basis. Also, the "between the first Saturday # and +Sunday of April" phrase, if taken literally, means that the # +transition takes place at 00:00 on the first Sunday on or after 04-02. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Pakistan 2002 max - Apr Sun>=2 0:00 1:00 S +Rule Pakistan 2002 max - Oct 15 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Karachi 4:28:12 - LMT 1907 5:30 - IST 1942 Sep 5:30 1:00 IST 1945 Oct 15 5:30 - IST 1951 Sep 30 5:00 - KART 1971 Mar 26 # Karachi Time - 5:00 - PKT # Pakistan Time + 5:00 Pakistan PK%sT # Pakistan Time # Palestine =================================================================== RCS file: RCS/europe,v retrieving revision 2002.2 retrieving revision 2002.2.0.1 diff -pu -r2002.2 -r2002.2.0.1 --- europe 2002/01/28 17:56:02 2002.2 +++ europe 2002/03/25 06:42:59 2002.2.0.1 @@ -853,6 +853,10 @@ Zone America/Thule -4:35:08 - LMT 1916 J # no. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all # the year round. The regulation is effective 1999-11-01. +# From Toomas Soome (2002-02-21): +# [On Feb 12] the Estonian government has changed once again timezone +politics. # Now we are using again EU rules. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time @@ -865,7 +869,8 @@ Zone Europe/Tallinn 1:39:00 - LMT 1880 2:00 1:00 EEST 1989 Sep 24 2:00s 2:00 C-Eur EE%sT 1998 Sep 22 2:00 EU EE%sT 1999 Nov 1 - 2:00 - EET + 2:00 - EET 2002 Feb 12 + 2:00 EU EE%sT # Finland # =================================================================== RCS file: RCS/northamerica,v retrieving revision 2001.4 retrieving revision 2001.4.0.1 diff -pu -r2001.4 -r2001.4.0.1 --- northamerica 2001/10/09 17:31:31 2001.4 +++ northamerica 2002/03/25 06:42:59 2001.4.0.1 @@ -1362,6 +1362,12 @@ Zone America/Dawson -9:17:40 - LMT 1900 # standard time. "This is so residents of the Federal District are not # subject to unexpected time changes," a statement from the court said. +# From Jesper Norgaard Welen (2002-03-12): +# ... consulting my local grocery store(!) and my coworkers, they all +insisted # that a new decision had been made to reinstate US style DST +in Mexico.... # http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html +# confirms this. Sonora as usual is the only state where DST is not +applied. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S @@ -1373,8 +1379,10 @@ Rule Mexico 1950 only - Feb 12 0:00 1:00 Rule Mexico 1950 only - Jul 30 0:00 0 S Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S -Rule Mexico 2001 max - May Sun>=1 2:00 1:00 D -Rule Mexico 2001 max - Sep lastSun 2:00 0 S +Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D +Rule Mexico 2001 only - Sep lastSun 2:00 0 S +Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D +Rule Mexico 2002 max - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Quintana Roo Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 =================================================================== RCS file: RCS/southamerica,v retrieving revision 2001.4 retrieving revision 2001.4.0.1 diff -pu -r2001.4 -r2001.4.0.1 --- southamerica 2001/10/09 17:31:31 2001.4 +++ southamerica 2002/03/25 06:42:59 2001.4.0.1 @@ -79,18 +79,11 @@ Rule Arg 1963 only - Oct 1 0:00 0 - Rule Arg 1963 only - Dec 15 0:00 1:00 S Rule Arg 1964 1966 - Mar 1 0:00 0 - Rule Arg 1964 1966 - Oct 15 0:00 1:00 S -Rule Arg 1967 only - Apr 1 0:00 0 - +Rule Arg 1967 only - Apr 2 0:00 0 - Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - Rule Arg 1974 only - Jan 23 0:00 1:00 S Rule Arg 1974 only - May 1 0:00 0 - -Rule Arg 1974 1976 - Oct Sun>=1 0:00 1:00 S -Rule Arg 1975 1977 - Apr Sun>=1 0:00 0 - -Rule Arg 1985 only - Nov 2 0:00 1:00 S -Rule Arg 1986 only - Mar 14 0:00 0 - -Rule Arg 1986 1987 - Oct 25 0:00 1:00 S -Rule Arg 1987 only - Feb 13 0:00 0 - -Rule Arg 1988 only - Feb 7 0:00 0 - Rule Arg 1988 only - Dec 1 0:00 1:00 S # # From Hernan G. Otero <hernan(a)isoft.com.ar> (1995-06-26): @@ -148,76 +141,97 @@ Rule Arg 2000 only - Mar Sun>=1 0:00 0 - # This kind of things had always been done this way in Argentina. # We are still -03:00 all year round in all of the country. # +# +# From Paul Eggert (2002-01-22): +# <a href="http://www.spicasc.net/horvera.html"> +# Hora de verano para la Republica Argentina (2000-10-01) +# </a> says that standard time in Argentina from 1894-10-31 +# to 1920-05-01 was -4:16:48.25. Go with this more-precise value # +over Shanks. + +# Unless otherwise specified, data are from Shanks through 1992, from # +the IATA otherwise. As noted below, Shanks says that # America/Cordoba +split into 7 subregions during 1991/1992, but we # haven't verified +this yet so for now we'll keep it a single region. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] # # Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC), # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) -Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov - -4:16:44 - CMT 1920 May # Cordoba Mean Time +Zone America/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May # Cordoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT 1999 Oct 3 0:00 - -4:00 Arg AR%sT 2000 Mar 3 0:00 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART # # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), -# Formosa (FM), La Pampa (LP), Chubut (CH) -Zone America/Rosario -4:02:40 - LMT 1894 Nov - -4:16:44 - CMT 1920 May - -4:00 - ART 1930 Dec - -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT 1991 Jul - -3:00 - ART 1999 Oct 3 0:00 - -4:00 Arg AR%sT 2000 Mar 3 0:00 - -3:00 - ART +# Formosa (FM), Salta (SA), Tucuman (TM), Santiago del Estero (SE), # +Cordoba (CB), La Rioja (LR), San Juan (SJ), San Luis (SL), La Pampa +(LP), # Neuquen (NQ), Rio Negro (RN), Chubut (CH) # +# Shanks also makes the following claims, which we haven't verified: +# - Formosa switched to -3:00 on 1991-01-07. +# - La Rioja and San Juan switched to -4:00 on 1991-03-01 +# and then to 03:00 on 1991-05-07. +# - Misiones switched to -3:00 on 1990-12-29. +# - Chaco switched to -3:00 on 1991-01-04. +# - San Luis switched to -4:00 on 1990-03-14, then to -3:00 on 1990-10-15, +# then to -4:00 on 1991-03-01, then to -3:00 on 1991-06-01. +# - Santiago del Estero switched to -4:00 on 1991-04-01, +# then to -3:00 on 1991-04-26. +# If we need to add Zones for these areas, we may need to have a subdirectory +# for Argentina, as e.g. "America/San_Luis" is too ambiguious. # -# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL), -# Neuquen (NQ), Rio Negro (RN) -Zone America/Cordoba -4:16:44 - LMT 1894 Nov - -4:16:44 - CMT 1920 May +Zone America/Cordoba -4:16:48 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT 1990 Jul - -3:00 - ART 1999 Oct 3 0:00 - -4:00 Arg AR%sT 2000 Mar 3 0:00 + -3:00 Arg AR%sT 1991 Mar 3 + -4:00 - WART 1991 Oct 20 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART # # Jujuy (JY) -Zone America/Jujuy -4:21:12 - LMT 1894 Nov - -4:16:44 - CMT 1920 May +Zone America/Jujuy -4:21:12 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT 1991 Mar 3 + -3:00 Arg AR%sT 1990 Mar 4 + -4:00 - WART 1990 Oct 28 + -4:00 1:00 WARST 1991 Mar 17 -4:00 - WART 1991 Oct 6 - -4:00 1:00 WARST 1992 Mar 15 - -4:00 - WART 1992 Oct 18 - -3:00 - ART 1999 Oct 3 0:00 - -4:00 Arg AR%sT 2000 Mar 3 0:00 + -3:00 1:00 ARST 1992 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART # # Catamarca (CT) -Zone America/Catamarca -4:23:08 - LMT 1894 Nov - -4:16:44 - CMT 1920 May +Zone America/Catamarca -4:23:08 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT 1990 Jul - -3:00 - ART 1991 Jul - -3:00 Arg AR%sT 1992 Jul - -3:00 - ART 1999 Oct 3 0:00 - -4:00 Arg AR%sT 2000 Mar 3 0:00 + -3:00 Arg AR%sT 1991 Mar 3 + -4:00 - WART 1991 Oct 20 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART # # Mendoza (MZ) -Zone America/Mendoza -4:35:16 - LMT 1894 Nov - -4:16:44 - CMT 1920 May +Zone America/Mendoza -4:35:16 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT 1991 Mar 3 + -3:00 Arg AR%sT 1990 Mar 4 + -4:00 - WART 1990 Oct 15 + -4:00 1:00 WARST 1991 Mar 1 -4:00 - WART 1991 Oct 15 -4:00 1:00 WARST 1992 Mar 1 -4:00 - WART 1992 Oct 18 - -3:00 - ART 1999 Oct 3 0:00 - -4:00 Arg AR%sT 2000 Mar 3 0:00 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART # Aruba @@ -729,12 +743,19 @@ Rule Para 1996 only - Mar 1 0:00 0 - # From Jesper Norgaard (2001-03-06) [an official URL saying similar things]: # http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.… # -Rule Para 1996 max - Oct Sun>=1 0:00 1:00 S +Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S # IATA SSIM (1997-09) says Mar 1; go with Shanks. Rule Para 1997 only - Feb lastSun 0:00 0 - # Shanks says 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). -Rule Para 1998 max - Mar Sun>=1 0:00 0 - +Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - +# From Rives McDow (2002-02-28): +# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that +changed the # dst method to be from the first Sunday in September to +the first Sunday in # April. +Rule Para 2002 max - Apr Sun>=1 0:00 0 - +Rule Para 2002 max - Sep Sun>=1 0:00 1:00 S + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 =================================================================== RCS file: RCS/zone.tab,v retrieving revision 2002.2 retrieving revision 2002.2.0.1 diff -pu -r2002.2 -r2002.2.0.1 --- zone.tab 2002/01/28 17:56:03 2002.2 +++ zone.tab 2002/03/25 06:42:59 2002.2.0.1 @@ -41,8 +41,7 @@ AQ -7824+10654 Antarctica/Vostok Vostok AQ -6640+14001 Antarctica/DumontDUrville Dumont-d'Urville Base, Terre Adelie AQ -690022+0393524 Antarctica/Syowa Syowa Station, E Ongul I AR -3436-05827 America/Buenos_Aires E Argentina (BA, DF, SC, TF) -AR -3257-06040 America/Rosario NE Argentina (SF, ER, CN, MN, CC, FM, LP, CH) -AR -3124-06411 America/Cordoba W Argentina (CB, SA, TM, LR, SJ, SL, NQ, RN) +AR -3124-06411 America/Cordoba most locations (CB,CC,CH,CN,ER,FM,LP,LR,MN,NQ,RN,SA,SE,SF,SJ,SL,TM) AR -2411-06518 America/Jujuy Jujuy (JY) AR -2828-06547 America/Catamarca Catamarca (CT) AR -3253-06849 America/Mendoza Mendoza (MZ) @@ -189,7 +188,7 @@ HT +1832-07220 America/Port-au-Prince HU +4730+01905 Europe/Budapest ID -0610+10648 Asia/Jakarta Java & Sumatra ID -0002+10920 Asia/Pontianak west & central Borneo -ID -0507+11924 Asia/Ujung_Pandang east & south Borneo, Celebes, Bali, Nusa Tengarra, west Timor +ID -0507+11924 Asia/Makassar east & south Borneo, Celebes, Bali, Nusa Tengarra, west Timor ID -0232+14042 Asia/Jayapura Irian Jaya & the Moluccas IE +5320-00615 Europe/Dublin IL +3146+03514 Asia/Jerusalem =================================================================== RCS file: RCS/backward,v retrieving revision 2002.2 retrieving revision 2002.2.0.1 diff -pu -r2002.2 -r2002.2.0.1 --- backward 2002/01/28 17:56:02 2002.2 +++ backward 2002/03/25 06:42:59 2002.2.0.1 @@ -8,11 +8,13 @@ Link America/Tijuana America/Ensenada Link America/Indianapolis America/Fort_Wayne Link America/Indiana/Knox America/Knox_IN Link America/Rio_Branco America/Porto_Acre +Link America/Cordoba America/Rosario Link America/St_Thomas America/Virgin Link Asia/Ashgabat Asia/Ashkhabad Link Asia/Chongqing Asia/Chungking Link Asia/Dhaka Asia/Dacca Link Asia/Macau Asia/Macao +Link Asia/Makassar Asia/Ujung_Pandang Link Asia/Jerusalem Asia/Tel_Aviv Link Asia/Thimphu Asia/Thimbu Link Asia/Ulaanbaatar Asia/Ulan_Bator =================================================================== RCS file: RCS/tz-link.htm,v retrieving revision 2002.2 retrieving revision 2002.2.0.1 diff -pu -r2002.2 -r2002.2.0.1 --- tz-link.htm 2002/01/28 17:56:03 2002.2 +++ tz-link.htm 2002/03/27 06:40:37 2002.2.0.1 @@ -9,7 +9,7 @@ <meta http-equiv="Content-type" content='text/html; charset="US-ASCII"' /> <meta name="DC.Creator" content="Eggert, Paul" /> <meta name="DC.Contributor" content="Olson, Arthur David" /> -<meta name="DC.Date" content="2001-05-30" /> +<meta name="DC.Date" content="2002-03-26" /> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time" /> <meta name="DC.Identifier" content="http://www.twinsun.com/tz/tz-link.htm" /> @@ -107,8 +107,6 @@ World</a></li> <li><a href="http://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current Time in 1000 Places</a></li> <li><a href="http://timezoneconverter.com/">Time Zone Converter</a></li> </ul></li> -<li><a href="http://www.tick2tock.com/cgi-bin/TZConverter">Tick2Tock -time zone converter</a> is a multilingual interface.</li> <li><a href="http://www.holidayfestival.com/">The Worldwide Holiday & Festival Site</a> lists DST-related clock changes along with holidays.</li> @@ -164,7 +162,7 @@ Microsoft Windows program.</li> - Atlas Query</a> is Astrodienst's Web version of Shanks's excellent time zone history atlases published in both <a href="http://astrocom.com/software/pcatlas.html">computer</a> and <a -href="http://astrocom.com/books/xrefa.htm#SHANKS">book</a> form by <a +href="http://astrocom.com/books/xrefa.php#SHANKS">book</a> form by <a href="http://astrocom.com/">Astro Communications Services</a>.</li> <li><a href="http://worldtime.com/">WORLDTIME: interactive atlas, time info, public holidays</a> @@ -200,9 +198,11 @@ recent editions. The pictorial quality is good, but the maps do not indicate summer time, and parts of the data are a few years out of date.</li> -<li><a href="http://wwg.lgg.ru/russia/timezone.html" -hreflang="ru">Map of Russian Federation time zones (in Russian)</a> -has a wealth of information about Russian time zones.</li> +<li><a href="http://worldtimezone.com/">World timezones map with +current time</a> has several fancy time zone maps; it covers Russia +particularly well. The maps' pictorial quality is not quite as good as +the CIA's but the maps are more up to date.</li> </ul> <h2>Time zone boundaries</h2> <ul> @@ -229,7 +229,7 @@ Saving Time - History, rationale, laws a is a good overall history of DST.</li> <li><a href="http://toi.iriti.cnr.it/">The Time of Internet</a> -contains good descriptions of Time Zones and daylight saving time, +describes time zones and daylight saving time, with diagrams. The time zone map is out of date, however.</li> <li><a href="http://www.phys.uu.nl/~vgent/idl/idl.htm">A History of @@ -261,8 +261,8 @@ Saving Time</a>.</dd> href="http://www.ptb.de/en/org/4/43/432/lega.htm">Realisation of Legal Time in Germany</a>.</dd> <dt>Israel</dt> -<dd>The Ministry of Interior periodically issues <a -href="ftp://ftp.huji.ac.il/pub/tz/announcements" +<dd>The Interior Ministry periodically issues <a +href="ftp://ftp.cs.huji.ac.il/pub/tz/announcements/" hreflang="he">announcements (in Hebrew)</a>.</dd> <dt>Mexico</dt> <dd>The Investigation and Analysis Service of the Mexican Library of @@ -289,10 +289,11 @@ of summer time dates</a>.</dd> href="http://literature.agilent.com/litwebbin/purl.cgi?org_id=tmo&pub_id=5965…">The Science of Timekeeping</a> is an excellent and thorough introduction to the theory and practice of precision timekeeping.</li> -<li><a href="http://www.ntp.org/">Time Server</a> discusses +<li><a href="http://www.ntp.org/">Time Synchronization Server</a> +discusses the Network Time Protocol (NTP), used to synchronize clocks of Internet hosts.</li> -<li><a href="http://ecco.bsee.swin.edu.au/chronos/GMT-explained.html">A +<li><a href="http://gauss.gge.unb.ca/GMT.UT.and.the.RGO.txt" +charset="macintosh">A Few Facts Concerning GMT, UT, and the RGO</a> answers questions like "What is the difference between GMT and UTC?"</li> <li><a @@ -313,11 +314,10 @@ the Earth Orientation Parameters Product International Earth Rotation Service, the committee that decides when leap seconds occur.</li> <li>The <a -href="http://clockdev.usno.navy.mil/archives/leapsecs.html">Leap +href="http://rom.usno.navy.mil/cgi-bin/wa">Leap Second Discussion List</a> covers <a -href="http://clockdev.usno.navy.mil/cgi-bin/wa.exe?A3=ind00&L=leapsecs&P=…">McCarthy -and Klepczynski's proposal to discontinue leap seconds</a> -(which requires discussion list membership to read). +href="http://www.findarticles.com/cf_0/m0BPW/11_10/57821998/p1/article. +jhtml">McCarthy +and Klepczynski's proposal to discontinue leap seconds</a>. This proposal is being studied by the URSI Commission J <a href="http://space.mit.edu/URSI/leapsecond.html">Working Group on the Leap Second</a>, and the IAU

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TZ data for Estonia
by Mart Oruaas March 22, 2002

March 22, 2002

Hello, After a lot of political fuzz, DST was suddenly reestablished in Estonia just a bit more than a month before the actual switchover date. According to Government's regulation no. 84 (2002-02-21, VVm RT I 2002, 22, 127). The funny side is that this regulation is fundamentally broken and all those people are blindly going to follow what was written in a press release by Government's Press Office. ;-) # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time 1:00 C-Eur CE%sT 1919 Jul 1:39:00 - TMT 1921 May 2:00 - EET 1940 Aug 6 3:00 - MSK 1941 Sep 15 1:00 C-Eur CE%sT 1944 Sep 22 3:00 Russia MSK/MSD 1989 Mar 26 2:00s 2:00 1:00 EEST 1989 Sep 24 2:00s 2:00 C-Eur EE%sT 1998 Sep 22 2:00 EU EE%sT 1999 Nov 1 2:00 - EET 2002 Feb 21 2:00 EU EE%sT PS. please omit my e-mail address from the zone data file. -- /* Mart Oruaas Systems Engineer, IT dept. Tel: +372-6-711416 Pankade Kaardikeskus Fax: +372-6-711420 Laki 12, Tallinn, Estonia E-mail: fazz(a)estcard.ee */

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RE: symlinks
by Olson, Arthur David (NCI) March 20, 2002

March 20, 2002

> -----Original Message----- > From: Paul Eggert [mailto:eggert@twinsun.com] > Sent: Thursday, March 14, 2002 7:19 PM > To: Olson, Arthur David (NCI) > Cc: tz(a)elsie.nci.nih.gov > Subject: Re: symlinks > > Unfortunately that code won't work if toname is of the form FOO/BAR, > where FOO is a symbolic link to some other place in the filesystem. > > The simplest fix is to remove the HAVE_SYMLINK code entirely, and to > fail if the hard-link call fails. It's one less thing to configure in > Makefile and in private.h. But if you want to support situations > where hard links don't work, I think it would be simpler and more > portable to make a copy instead of a link. Checking the legislative history, I discovered that the item attached below is what got the symlink ball rolling. What I'm after is something that handles such real-world cases correctly; I'm willing to let non-real-world cases slide. --ado >From OLSONA(a)dc37a.nci.nih.gov Sat Jan 17 14:32:28 1998 Return-Path: <OLSONA(a)dc37a.nci.nih.gov> Received: from imc.nih.gov by elsie.nci.nih.gov (4.1/SMI-4.1) id AA06211; Sat, 17 Jan 98 14:32:28 EST Message-Id: <9801171932.AA06211(a)elsie.nci.nih.gov> Received: by imc.nih.gov with Internet Mail Service (5.0.1458.49) id <DCQ5RJ2X>; Sat, 17 Jan 1998 14:32:17 -0500 From: "Olson, Arthur David" <OLSONA(a)dc37a.nci.nih.gov> To: 'tz' <tz(a)elsie.nci.nih.gov>, "'aj(a)arthur.rhein-neckar.de'" <aj(a)arthur.rhein-neckar.de> Subject: FW: zic using hardlinks:-( Date: Sat, 17 Jan 1998 14:31:18 -0500 X-Priority: 3 X-Mailer: Internet Mail Service (5.0.1458.49) Status: RO Andreas Jaeger is not on the time zone list; be sure to include Andreas in any reply. --ado ---------- From: Andreas Jaeger[SMTP:aj@arthur.rhein-neckar.de] Sent: Thursday, January 15, 1998 3:34 PM To: tz(a)elsie.nci.nih.gov Subject: zic using hardlinks:-( Hi, I received the following bug report for GNU libc. Jochen says that using a hard link doesn't work for his system since /etc and /usr/share are on different filesystems. zic is from tzcode1997h. I see three possibilities: - changing the link call in zic.c to symlink. - if link fails with error EXDEV (oldpath and newpath are not on the same filesystem) retry with a symlink. - leave it the way it is. Should symbolic links used in general or only for localtime? Andreas -- Andreas Jaeger aj(a)arthur.rhein-neckar.de >Number: 413 >Category: libc >Synopsis: `zic -l' tries to hard link a file between different disk partitions >Confidential: no >Severity: non-critical >Priority: low >Responsible: libc-gnats >State: open >Class: sw-bug >Submitter-Id: unknown >Arrival-Date: Thu Jan 15 07:32:17 EST 1998 >Last-Modified: >Originator: Jochen Voss >Organization: Department of Mathematics, University of Kaiserslautern/Germany >Release: libc-2.0.6 >Environment: Host type: i486-pc-linux-gnu System: Linux tatonka 2.0.33 #2 Fri Jan 9 20:20:45 MET 1998 i486 Architecture: i486 Addons: localedata crypt linuxthreads Build CFLAGS: -O3 -m486 -fomit-frame-pointer Build CC: gcc -B$(common-objpfx) Build shared: yes Build profile: no Build omitfp: no Stdio: libio >Description: The command "zic -l MET" should set the local time zone by linking the file "/usr/share/zoneinfo/MET" to "/etc/localtime". It uses a hard link for this purpose. On my system this fails, because the directories "/etc" and "/usr/share/zoneinfo" are located on different disk partitions on my system. This results in the output zic: Kann nicht von /usr/share/zoneinfo/MET nach /etc/localtime linken: Ungltiger Link ber Gertegrenzen hinweg when I execaute the above command (obviously I use `LANG=de'). >How-To-Repeat: Find a system, which uses disk partitions as described above, and execute the command "zic -l MET". >Fix: Modify the code in "time/zic.c" to use symlinks (if available) or to copy the file if the hard link fails. >Audit-Trail: >Unformatted:

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RE: Pakistan
by Jesper Nørgaard March 16, 2002

March 16, 2002

I found a government page with the same information, possibly the origin of it, on http://www.pak.gov.pk/public/news/app/app06_dec.htm There is more information on other issues, but the wording of the DST bit is the same. On a personal note they are really trying to test the limit of timezone handling software, choosing First Saturday and First Sunday of a month as a parameter, probably not realizing that these can be mutually exclusive, maby meaning that if First Sunday is first day of month, it will not be counted (as in 2007). Choosing fixed date 15.th. of October as DST end date, when the start date is parameterized to a weekend, is highly obscure too - but not difficult to handle. Regards, 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 (5) 58-04-20-04 ext. 1374 Fax: +52 (5) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 CIMMYT home page: http://cimmyt.cgiar.org Check out my free program World Time Explorer: http://www20.Brinkster.com/timezone50/index.htm http://tz.freewebsites.com/index.htm ---------- From: Paul Eggert[SMTP:eggert@twinsun.com] Sent: Viernes 15 de Marzo de 2002 10:19 To: rmcdow(a)enteles.com Cc: tz(a)elsie.nci.nih.gov Subject: Re: Pakistan > Date: Wed, 13 Mar 2002 11:27:18 -0800 > From: Rives McDow <rmcdow(a)enteles.com> > I have been advised that Pakistan has decided to adopt dst on a TRIAL > basis for one year, starting 00:01 local time on April 7, 2002 and ending at > 00:01 local time October 6, 2002. This is what I was told, but I believe > that the actual time of change may be 00:00; the 00:01 was to make it clear > which day it was on. Thanks for the heads-up. I looked around and found these copies of what appears to be essentially the same source: http://www.dawn.com/2001/12/06/top4.htm http://www.hclinfinet.com/2001/DEC/WEEK2/7/PAKInsideNN2.jsp http://www.jang.com.pk/thenews/dec2001-daily/06-12-2001/main/main5.htm (dated 2001-12-06) which says that the Cabinet adopted a scheme "to advance the clocks by one hour on the night between the first Saturday and Sunday of April and revert to the original position on 15th October each year". This agrees with your April 7 at 00:00, but disagrees about the October transition, and makes it sound like it's not on a trial basis. Also, the "between the first Saturday and Sunday of April" phrase, if taken literally, means that the transition takes place at 00:00 on the first Sunday on or after April 2, not the more-usual April 1. The first year that this would make a difference is 2007. For what it's worth, Shanks says that the last transition from DST in what is now Pakistan also occurred at 00:00 on October 15. The year was 1945.

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Pakistan
by Rives McDow March 16, 2002

March 16, 2002

Dear Arthur and all, I have been advised that Pakistan has decided to adopt dst on a TRIAL basis for one year, starting 00:01 local time on April 7, 2002 and ending at 00:01 local time October 6, 2002. This is what I was told, but I believe that the actual time of change may be 00:00; the 00:01 was to make it clear which day it was on. Rives

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symlinks
by Olson, Arthur David (NCI) March 15, 2002

March 15, 2002

Below find a proposed rewrite of the "symbolic link" section of zic.c; I hope this deals with the problems circulated recently on the time zone mailing list. --ado #if (HAVE_SYMLINK - 0) /* ** If hard link fails but from file exists, try a symbolic link. ** We want as relative a link as possible to maximize chances ** of correct behavior when the link is part of an ** exported directory. */ if (result != 0 && access(fromname, F_OK) == 0 && !itsdir(fromname)) { register char * t = toname; register char * f = fromname; register char * s; register int n; while ((s = strchr(t, '/')) != NULL && strncmp(t, f, (n = (s - t) + 1)) == 0) { t += n; f += n; } /* ** f t desired symlink value ** /a/b/c /d/e/f eliminated just above ** a/b/c d/e/f ../../a/b/c ** a/b d/e/f ../../a/b ** a/b/c d/e ../a/b/c ** /a/b/c d/e/f /a/b/c ** a/b/c /d/e/f hard to handle well */ if (*f == '/') s = ecpyalloc(f); else { s = NULL; if (*t != '/') { while (*t != '\0') if (*t++ == '/') s = ecatalloc(s, "../"); s = ecatalloc(s, f); } } if (s != NULL) { result = symlink(s, toname); ifree(s); if (result == 0) warning(_("hard link failed, symbolic link used")); } } #endif

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Summer time in Mexico (fwd)
by Steffen Thorsen March 13, 2002

March 13, 2002

Hi, I'm sending this on behalf of Jesper Norgaard Welen <timezone50(a)hotmail.com> =============================================================================== I hadn't seen any news about the pending decision of Congress in Mexico whether to apply DST in Mexico during 2002. As you may remember from earlier e-mails from me, both president Vicente Fox and rebellion mayor of capital Mexico City Andrés Manuel López Obrador had both lost their rights to impose DST rules upon Mexico locally or globally in court decisions, the court deciding that only Congress of Mexico could take such decisions. However, consulting my local grocery store(!) and my coworkers, they all insisted that a new decision had been made to reinstate US style DST in Mexico, e.g. of 7 months instead of the 5 months as in 2001. Consulting the pages of the government site http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html confirms this. Sonora as usual is the only state where DST is not applied, matching the way things are on the US side of the border in Arizona. Everything else is status quo compared to 2001 except that DST starts First Sunday of April at 2:00 and ends First Sunday of October at 2:00 (local times). The decree is actually issued by the president Vicente Fox, but stating that "the honorable Congress of the (ed:mexican republic) Union has bestown upon me to publicise the following decree" e.g. the decision was taken by the Congress, not by the president. Concerning the last notification from Rives McDow that Paraguay is changing their DST rules, I presume that this means that Asunción is still on DST until April 7 at 0:00 (local time)? E.g. the decree no. 16350 took effect immediately instead of just modifying the new DST period in Paraguay from September 2002 to April 2003? I found another reference to the decision of the mexican congress on http://www.reforma.com/nacional/articulo/151390/ which was obviously made before the presidential decree was issued. That article also surprisingly suggests a change for the state of Durango from GMT-6 to GMT-7 (except when applying DST) just as states California South, Chihuahua, Nayarit and Sinaloa, but the presidential decree on http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html doesn't confirm that, so I presume for now it was a journalist's mistake. http://www.terra.com.mx/noticias/articulo/084527/ also mentions the specific votes in the Congress of Mexico, with 295 in favor and 177 votes against the DST decision. 11 blank votes. Regards, 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 (5) 58-04-20-04 ext. 1374 Fax: +52 (5) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 CIMMYT home page: http://cimmyt.cgiar.org Check out my free program World Time Explorer: http://www20.Brinkster.com/timezone50/index.htm http://tz.freewebsites.com/index.htm _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx

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