Recently our government decided to cancel summer time switching…
So we need to make changes on our Linux/UNIX environment.
Here are steps how we can do it on Linux servers.
Check current rule:
# zdump -v Asia/Baku | grep 2016 Asia/Baku Sat Mar 26 23:59:59 2016 UTC = Sun Mar 27 03:59:59 2016 AZT isdst=0 gmtoff=14400 Asia/Baku Sun Mar 27 00:00:00 2016 UTC = Sun Mar 27 05:00:00 2016 AZST isdst=1 gmtoff=18000 Asia/Baku Sat Oct 29 23:59:59 2016 UTC = Sun Oct 30 04:59:59 2016 AZST isdst=1 gmtoff=18000 Asia/Baku Sun Oct 30 00:00:00 2016 UTC = Sun Oct 30 04:00:00 2016 AZT isdst=0 gmtoff=14400
We see that rule will be applied @Sun Mar 27 2016…
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You can download new database from IANA released 12 March 2016.
It does not include changes for Azerbaijan…
# mkdir ./new_tz # cd ./new_tz # wget https://www.iana.org/time-zones/repository/releases/tzdata2016b.tar.gz # tar -zxvf tzdata2016b.tar.gz # cat ./asia | grep Azer # Azerbaijan # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23): Rule Azer 1997 max - Mar lastSun 4:00 1:00 S Rule Azer 1997 max - Oct lastSun 5:00 0 - 4:00 - AZT 1996 # Azerbaijan Time 4:00 Azer AZ%sT # vi ./asia 136 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 137 Rule Azer 1997 max - Mar lastSun 4:00 1:00 S 138 Rule Azer 1997 max - Oct lastSun 5:00 0 -</pre>
Now we need to change max to 2015; it means that rule will be applied last time @2015…
136 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 137 Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 S 138 Rule Azer 1997 2015 - Oct lastSun 5:00 0 - # zic ./asia # tzdata-update
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I have mirrored ready archive to be just implemented on Linux servers….
# wget http://anit.az/tzdata2016b_BAKU_2015.tar.gz # tar -xvf ./tzdata2016b_BAKU_2015.tar.gz # cd ./new_tz # zic ./asia # tzdata-update
#######CHECK NEW RULE
# zdump -v Asia/Baku | grep 2015 || zdump -v Asia/Baku | grep 2016 Asia/Baku Sat Mar 28 23:59:59 2015 UTC = Sun Mar 29 03:59:59 2015 AZT isdst=0 gmtoff=14400 Asia/Baku Sun Mar 29 00:00:00 2015 UTC = Sun Mar 29 05:00:00 2015 AZST isdst=1 gmtoff=18000 Asia/Baku Sat Oct 24 23:59:59 2015 UTC = Sun Oct 25 04:59:59 2015 AZST isdst=1 gmtoff=18000 Asia/Baku Sun Oct 25 00:00:00 2015 UTC = Sun Oct 25 04:00:00 2015 AZT isdst=0 gmtoff=14400 # date Sat Mar 19 16:47:03 AZT 2016
we never will see such format for Azerbaijan:
Thu Aug 27 02:49:26 AZST 2015
AZST ST means Summer Time :)
Until now it will always show as AZT …Just time, no summer time anymore for Azerbaijan…:)
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SOLARIS 9/10 fix:
vi /usr/share/lib/zoneinfo/src/asia
Same rule, change max to 2015.
#
Rule Azer 1997 2015 – Mar lastSun 4:00 1:00 S
Rule Azer 1997 2015 – Oct lastSun 5:00 0 –
#
zic /usr/share/lib/zoneinfo/src/asia
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Linux Debian DST fix…
# wget http://anit.az/tzdata2016b_BAKU_2015.tar.g
# tar -xvf ./tzdata2016b_BAKU_2015.tar.gz
# cd ./new_tz/
# zic ./asia
# dpkg-reconfigure tzdata
set Asia/Baku…
root@debie ~/new_tz # cat /etc/debian_version
7.2
root@debie ~/new_tz # date
Mon Mar 28 14:25:51 AZT 2016
Done….