RE: Istanbul,Turkey needs time zone rule update
I'm forwarding this message from Amar Devegowda, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado ________________________________ From: Amar Devegowda [mailto:ADEVEGOW@in.ibm.com] Sent: Wednesday, January 03, 2007 1:15 PM To: Olson, Arthur David (NIH/NCI) [E] Subject: Istanbul,Turkey needs time zone rule update Hi, This is Amar Devegowda from IBM India Software Labs. I sent this mail to tz@lecserver.nci.nih.gov couple of times and got bounced and now I am sending it directly to you. I downloaded the tzdata2006p.tar.gz and found that the time zone rules for Istanbul, Turkey (File name: europe in tzdata2006p.tar.gz) are outdated. The time zone rules for Istanbul, Turkey have not been changed for years now. It seems like that it was last updated in year 1985 or so. The latest rules are available at - http://www.timeanddate.com/worldclock/timezone.html?n=107 We have customers reporting problems to us stating that our Java has got outdated time zone rules for Istanbul, Turkey. Hence, could you please update the time zone database with the new rules for Istanbul, Turkey ? Thanks in advance. Regards, Amar Amar Devegowda Java L3 Support for Windows, Java Technology Center, IBM India Software Labs, Bangalore, India Telephone 91-80-25094423
From: Amar Devegowda [mailto:ADEVEGOW@in.ibm.com] Sent: Wednesday, January 03, 2007 1:15 PM
The time zone rules for Istanbul, Turkey have not been changed for years now. It seems like that it was last updated in year 1985 or so.
The latest rules are available at - http://www.timeanddate.com/worldclock/timezone.html?n=107
Thanks for the info. For our reference, can you please point us to a more-official web site that contains this information? Preferably English, but it's OK if it's Turkish. The Turkish goverment would be best, but newspapers are fine. Also, can you please try the following patch yourself, and verify that it's right? This patch changes time stamps only for 1991 and later. I could not find any discrepancies before 1991 between the current tz data and the source you cite. 1991 != 1985, so I'm worried that I've made a mistake in it. Thanks. =================================================================== RCS file: RCS/europe,v retrieving revision 2006.14.0.1 diff -pu -r2006.14.0.1 europe --- europe 2007/01/02 17:34:54 2006.14.0.1 +++ europe 2007/01/03 20:16:30 @@ -2278,6 +2278,14 @@ Zone Europe/Zurich 0:34:08 - LMT 1848 Se 1:00 EU CE%sT # Turkey + +# From Amar Devegowda (2007-01-03): +# The time zone rules for Istanbul, Turkey have not been changed for years now. +# ... The latest rules are available at - +# http://www.timeanddate.com/worldclock/timezone.html?n=107 +# From Paul Eggert (2007-01-03): +# Prefer the above source to Shanks & Pottenger for time stamps after 1990. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Turkey 1916 only - May 1 0:00 1:00 S Rule Turkey 1916 only - Oct 1 0:00 0 - @@ -2332,14 +2340,17 @@ Rule Turkey 1983 only - Jul 31 0:00 1:00 Rule Turkey 1983 only - Oct 2 0:00 0 - Rule Turkey 1985 only - Apr 20 0:00 1:00 S Rule Turkey 1985 only - Sep 28 0:00 0 - +Rule Turkey 1986 1990 - Mar lastSun 2:00s 1:00 S +Rule Turkey 1986 1990 - Sep lastSun 2:00s 0 - +Rule Turkey 1991 max - Mar lastSun 1:00s 1:00 S +Rule Turkey 1991 1995 - Sep lastSun 1:00s 0 - +Rule Turkey 1996 max - Oct lastSun 1:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Istanbul 1:55:52 - LMT 1880 1:56:56 - IMT 1910 Oct # Istanbul Mean Time? 2:00 Turkey EE%sT 1978 Oct 15 3:00 Turkey TR%sT 1985 Apr 20 # Turkey Time - 2:00 Turkey EE%sT 1986 - 2:00 C-Eur EE%sT 1991 - 2:00 EU EE%sT + 2:00 Turkey EE%sT Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # Ukraine
I have been able to find press records back to 1996 which all say that DST started 01:00 local time and end at 02:00 local time. I am not sure what happened before that. One example for each year from 1996 to 2001: http://newspot.byegm.gov.tr/arsiv/1996/21/N4.htm http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING97/03/97X03X25.TXT http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING98/03/98X03X02.HTM http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING99/10/99X10X26.HTM#%2016 http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2000/03/00X03X06.HTM#%2021 http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2001/03/23x03x01.HTM#%2027 Best regards, Steffen Thorsen / timeanddate.com Paul Eggert wrote:
From: Amar Devegowda [mailto:ADEVEGOW@in.ibm.com] Sent: Wednesday, January 03, 2007 1:15 PM
The time zone rules for Istanbul, Turkey have not been changed for years now. It seems like that it was last updated in year 1985 or so.
The latest rules are available at - http://www.timeanddate.com/worldclock/timezone.html?n=107
Thanks for the info. For our reference, can you please point us to a more-official web site that contains this information? Preferably English, but it's OK if it's Turkish. The Turkish goverment would be best, but newspapers are fine.
Also, can you please try the following patch yourself, and verify that it's right? This patch changes time stamps only for 1991 and later. I could not find any discrepancies before 1991 between the current tz data and the source you cite. 1991 != 1985, so I'm worried that I've made a mistake in it.
participants (3)
-
Olson, Arthur David (NIH/NCI) [E] -
Paul Eggert -
Steffen Thorsen