proposed time zone package change to africa file for Cairo

[Sean Coffey]

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
>>
>>   
>