Clocks in Ukraine move back October 30, 2011
The problem:
On October 31, 2011 my clock time was wrong. Winter time was not supported, somehow
It was supposed to be one hour back. But not in my case.
Solution:
So what's the reason ?
Appeared to be the Ukrainian government changed its mind late enough.
Firstly it decided ti do a permanent DST from 2011.
But then the desicion was reverted.
tzdata package represent the databaes of DST changes for timezones
https://launchpad.net/ubuntu/+source/tzdata
And the latest version
https://launchpad.net/ubuntu/+source/tzdata/2011n-0ubuntu0.10.04
was not updated on my laptop
Useful commands:
Not correct output. It includes permanent DST without a Winter time
sudo zdump -v /etc/localtime | grep 2011/etc/localtime Sun Mar 27 00:59:59 2011 UTC = Sun Mar 27 02:59:59 2011 EET isdst=0 gmtoff=7200
/etc/localtime Sun Mar 27 01:00:00 2011 UTC = Sun Mar 27 04:00:00 2011 FET isdst=0 gmtoff=10800
With the latest update, there is a winter time step back in October 30, 2011
sudo zdump -v /etc/localtime | grep 2011
/etc/localtime Sun Mar 27 00:59:59 2011 UTC = Sun Mar 27 02:59:59 2011 EET isdst=0 gmtoff=7200
/etc/localtime Sun Mar 27 01:00:00 2011 UTC = Sun Mar 27 04:00:00 2011 EEST isdst=1 gmtoff=10800
/etc/localtime Sun Oct 30 00:59:59 2011 UTC = Sun Oct 30 03:59:59 2011 EEST isdst=1 gmtoff=10800
/etc/localtime Sun Oct 30 01:00:00 2011 UTC = Sun Oct 30 03:00:00 2011 EET isdst=0 gmtoff=7200
Useful links:
https://launchpad.net/ubuntu/+source/tzdata
http://en.wikipedia.org/wiki/Time_zone
http://en.wikipedia.org/wiki/Daylight_saving_time
http://en.wikipedia.org/wiki/Tz_database
So, thank you OpenSource community for hot updates
