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I have problem with unix timestamp ( date +%s ). This command gives me a GMT time, however I am using CET, so the unix timestamp is in 1 hour late (and my rrdtool database too!). How I can change unix timestamp's to CET or add +1 hour?

With command "date" I get good time. Update:

@ubuntu:~/tmp$ date +%s%Z
1295915413CET
@ubuntu:~/tmp$ cat /etc/timezone
Europe/Bratislava
@ubuntu:~/tmp$ date
Tue Jan 25 01:30:28 CET 2011
@ubuntu:~/tmp$ date +%s
1295915459
@ubuntu:~/tmp$ in normal time: Tue, 25 Jan 2011 00:30:13 GMT

Update2:

In online converters I can set the timezone, so maybe the numbers are equal for all timezone? Then the question is that, why rrdtools late a hour?

@ubuntu:~/tmp$ date -d @1295916112 Tue Jan 25 01:41:52 CET 2011

As we can see the timestamp is correct, only rrdtool is wrong. But why?

  • We don't delete questions that could be of benefit to someone else later. Please roll back your edit. Especially so people can see what the actual solution is. – Paused until further notice. Jan 25 '11 at 1:21
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That's odd. On my Ubuntu Linux system I get unix time in CET when I enter date +%s.

Could you show us the output of date +%s%Z? And could you cat /etc/timezone?

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That's what %s is supposed to do. From man date:

%s     seconds since 1970-01-01 00:00:00 UTC

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