Hi, I think the tzdata may have an conflict with the Egypt rules posted at timeanddate.com At the moment - the start DST rule for Egypt is : Rule Egypt 1995 max - Apr lastFri 0:00s 1:00 S This would imply the night of thurs night/Fri morning 23/24th April 2009. Now - timeanddate has : Thursday, April 30, 2009 at 11:59:59 PM No +2 hours EET Friday, May 1, 2009 at 1:00:00 AM 1 hour +3 hours EEST http://www.timeanddate.com/worldclock/clockchange.html?n=53 May I ask which one is correct ? One of our customers has said they have local knowledge that the timeanddate.com version is the correct one. Thanks, Sean. Sean Coffey wrote:

Hi Arthur,

the timeanddate link given in the update below is incorrect I believe. It points to "Acapulco, Guerrero, Mexico" http://www.timeanddate.com/worldclock/clockchange.html?n=3D53

Is : http://www.timeanddate.com/worldclock/clockchange.html?n=53 the line you meant ?

regards, Sean.

Arthur David Olson wrote:

...

Below is a proposed change (thanks to Petr Machata) for the end of DST in Egypt in 2009 and forward. If not problems are found, this change should show up in the ftpable version a week from today.

--ado

------- africa ------- *** /tmp/geta10010 Mon Apr 20 16:34:24 2009 --- /tmp/getb10010 Mon Apr 20 16:34:24 2009 *************** *** 1,4 **** ! # @(#)africa 8.18 # <pre> # This data is by no means authoritative; if you think you know better, --- 1,4 ---- ! # @(#)africa 8.19 # <pre> # This data is by no means authoritative; if you think you know better, *************** *** 236,243 **** # unless discontinued, next DST may end Thursday 28 August 2008. # From Paul Eggert (2007-08-17): # For lack of better info, assume the new rule is last Thursday in August. - Rule Egypt 2008 max - Aug lastThu 23:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:00 - LMT 1900 Oct 2:00 Egypt EE%sT --- 236,282 ---- # unless discontinued, next DST may end Thursday 28 August 2008. # From Paul Eggert (2007-08-17): # For lack of better info, assume the new rule is last Thursday in August. + # From Petr Machata (2009-04-06): + # The following appeared in Red Hat bugzilla[1] (edited): + # + # > $ zdump -v /usr/share/zoneinfo/Africa/Cairo | grep 2009 + # > /usr/share/zoneinfo/Africa/Cairo Thu Apr 23 21:59:59 2009 UTC =3D Thu = + # Apr 23 + # > 23:59:59 2009 EET isdst=3D0 gmtoff=3D7200 + # > /usr/share/zoneinfo/Africa/Cairo Thu Apr 23 22:00:00 2009 UTC =3D Fri = + # Apr 24 + # > 01:00:00 2009 EEST isdst=3D1 gmtoff=3D10800 + # > /usr/share/zoneinfo/Africa/Cairo Thu Aug 27 20:59:59 2009 UTC =3D Thu = + # Aug 27 + # > 23:59:59 2009 EEST isdst=3D1 gmtoff=3D10800 + # > /usr/share/zoneinfo/Africa/Cairo Thu Aug 27 21:00:00 2009 UTC =3D Thu = + # Aug 27 + # > 23:00:00 2009 EET isdst=3D0 gmtoff=3D7200 + # + # > end date should be Thu Sep 24 2009 (Last Thursday in September at 23:59= + # :59) + # > http://support.microsoft.com/kb/958729/ + # + # timeanddate[2] and another site I've found[3] also support that. + # + # [1] <a href="https://bugzilla.redhat.com/show_bug.cgi?id=3D492263"> + # https://bugzilla.redhat.com/show_bug.cgi?id=3D492263 + # </a> + # [2] <a href="http://www.timeanddate.com/worldclock/clockchange.html?n=3D53"> + # http://www.timeanddate.com/worldclock/clockchange.html?n=3D53 + # </a> + # [3] <a href="http://wwp.greenwichmeantime.com/time-zone/africa/egypt/"> + # http://wwp.greenwichmeantime.com/time-zone/africa/egypt/ + # </a> + + # From Arthur David Olson (2009-04-20): + # In 2009 (and for the next several years), Ramadan ends before the fourth + # Thursday in September; Egypt is expected to revert to the last Thursday + # in September. + Rule Egypt 2008 only - Aug lastThu 23:00s 0 - + Rule Egypt 2009 max - Sep lastThu 23:00s 0 - + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:00 - LMT 1900 Oct 2:00 Egypt EE%sT

Steffen Thorsen wrote:

There is no final decision yet (at least that we know of) on what date it will begin, so the date we list is tentative. This week we have asked several governmental sources in/representing Egypt, and they say it will usually start on the last Thursday of April (midnight after/24:00), although one person also said sometime in May (could have been with the meaning that it will start when May begin). Hello,

To follow-up on my previous comments about daylight saving time in Egypt, it has been officially confirmed today that daylight saving time will start at midnight tonight (not next week like we suspected based on earlier checks with official sources). We received this update from several official sources, including a government agency in Egypt, as well as on this site: www.ahram.org.eg/Index.asp?CurFN=fron10.htm&DID=9926 (Arabic), which translates to this using Google Translate: "Begin Daylight (Saving) Time at midnight, which is provided at 60 minutes, the last time even before the holy month of Ramadan, which falls in about the middle of August." The DST end date is likely to be before Ramadan begins, so it will probably end on midnight between Thursday, 20 August and Friday, 21 August. (Ramadan starts around 2009-08-22). So a rule like this is probably a good guess: Rule Egypt 2009 only - Aug 20 23:00s 0 - and maybe even Rule Egypt 2010 only - Aug 5 23:00s 0 - for next year. Eventually, as Ramadan is starting earlier every year, their period of DST may be really short unless otherwise advised. Best regards, Steffen / timeanddate.com