[CentOS] tzdata

Wed Feb 7 18:51:54 UTC 2007
Greg Bailey <gbailey at lxpro.com>

Steve Campbell wrote:
> I read a few days back on the list where the tzdata rpm was to take 
> care of the new DST rules. I run CentOS 3 servers, and did a 'yum 
> update  tzdata' , but received a 2006a update of the rpm.
>
> Is this proper? It sure didn't fix anything.
>
> Thanks
>
> Steve Campbell
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.

-Greg