Winter clock issues in linux

[Hetz Ben Hamo]

Shimi, 2013-c2 updates (available for centos 5.x/rhel 5.x) should be
sufficient too.


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2013/9/7 shimi <linux-il at shimi.net>

> On Sat, Sep 7, 2013 at 8:45 PM, Geoff Shang <geoff at quitelikely.com> wrote:
>
>> Hi,
>>
>> Apologies for not reading the rest of my mail but I wanted to answer this.
>>
>>
>> On Sat, 7 Sep 2013, Amichay P. K. wrote:
>>
>>  Will the Israeli winter clock changes have any effect in linux?
>>> Do you consider it safer to change the location to Greece?
>>> http://www.themarker.com/**technation/1.2111316<http://www.themarker.com/technation/1.2111316>
>>>
>>
>> I'm running Debian Squeeze and the timezone database is fine.  But I do
>> subscribe to Debian updates.
>>
>> If you want to be sure, run this command:
>>
>> tzdump -v Asia/Jerusalem |grep 2013
>>
>> It should output something like this:
>>
>> Asia/Jerusalem  Thu Mar 28 23:59:59 2013 UTC = Fri Mar 29 01:59:59 2013
>> IST isdst=0 gmtoff=7200
>> Asia/Jerusalem  Fri Mar 29 00:00:00 2013 UTC = Fri Mar 29 03:00:00 2013
>> IDT isdst=1 gmtoff=10800
>> Asia/Jerusalem  Sat Oct  5 22:59:59 2013 UTC = Sun Oct  6 01:59:59 2013
>> IDT isdst=1 gmtoff=10800
>> Asia/Jerusalem  Sat Oct  5 23:00:00 2013 UTC = Sun Oct  6 01:00:00 2013
>> IST isdst=0 gmtoff=7200
>>
>
> And if you have Geoff's output, then your clock would be moving at the
> wrong time[1] :)
>
> This is with a really up to date timezone data:
>
> $ /usr/sbin/zdump -v /etc/localtime | grep 2013
> /etc/localtime  Thu Mar 28 23:59:59 2013 UTC = Fri Mar 29 01:59:59 2013
> IST isdst=0
> /etc/localtime  Fri Mar 29 00:00:00 2013 UTC = Fri Mar 29 03:00:00 2013
> IDT isdst=1
> /etc/localtime  Sat Oct 26 22:59:59 2013 UTC = Sun Oct 27 01:59:59 2013
> IDT isdst=1
> /etc/localtime  Sat Oct 26 23:00:00 2013 UTC = Sun Oct 27 01:00:00 2013
> IST isdst=0
>
>  (you can use "Asia/Jerusalem" too, but make sure /etc/localtime indeed
> contains the content of /usr/share/zoneinfo/Israel or
> /usr/share/zoneinfo/Asia/Jerusalem - or a symlink to one of them.)
>
> You need version *2013d* of the database if you want the latest Israeli
> law.
>
> -- Shimi
>
> [1]
> http://www.justice.gov.il/NR/rdonlyres/FCE198C8-66FD-4AA8-AB9D-958264583207/41529/2401.pdf#page=8
>
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