[CentOS] tzdata

[John R Pierce]

Peter Serwe wrote:
> Greg Bailey wrote:
>> You can use the "zdump" to verify the DST rules.  Substitute the 
>> right timezone in the command below:
>>
>> $ /usr/sbin/zdump -v "US/Pacific" -c 2006,2008
>> US/Pacific  Fri Dec 13 20:45:52 1901 UTC = Fri Dec 13 12:45:52 1901 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Sat Dec 14 20:45:52 1901 UTC = Sat Dec 14 12:45:52 1901 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Sun Apr  2 09:59:59 2006 UTC = Sun Apr  2 01:59:59 2006 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Sun Apr  2 10:00:00 2006 UTC = Sun Apr  2 03:00:00 2006 
>> PDT isdst=1 gmtoff=-25200
>> US/Pacific  Sun Oct 29 08:59:59 2006 UTC = Sun Oct 29 01:59:59 2006 
>> PDT isdst=1 gmtoff=-25200
>> US/Pacific  Sun Oct 29 09:00:00 2006 UTC = Sun Oct 29 01:00:00 2006 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Sun Mar 11 09:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Sun Mar 11 10:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 
>> PDT isdst=1 gmtoff=-25200
>> US/Pacific  Sun Nov  4 08:59:59 2007 UTC = Sun Nov  4 01:59:59 2007 
>> PDT isdst=1 gmtoff=-25200
>> US/Pacific  Sun Nov  4 09:00:00 2007 UTC = Sun Nov  4 01:00:00 2007 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Mon Jan 18 03:14:07 2038 UTC = Sun Jan 17 19:14:07 2038 
>> PST isdst=0 gmtoff=-28800
>> US/Pacific  Tue Jan 19 03:14:07 2038 UTC = Mon Jan 18 19:14:07 2038 
>> PST isdst=0 gmtoff=-28800
>>
>> You can see DST takes effect on March 11 this year, so the rules are 
>> updated.  This output was from a CentOS 4 system, but I'd imagine the 
>> results should be the same on CentOS 3.
>
> On a side note, but kind of on-topic, I want to set my box to live in 
> a different timezone.  In my case, I actually
> want the box to live in GMT +0000, how would I go about doing that?  I 
> have this sneaky suspicion it's a sneaky
> little file somewhere, but I haven't been able to locate it.

cp the correct /usr/share/zoneinfo file to /etc/localdata, and also 
update /etc/sysconfig/(I forget) to have the TZ=therightthing.