How to get the first second of a given Day.

[email protected] (Deviloper)
Newsgroups perl.datetime
Message-ID <643713215.63956.1235124263699.JavaMail.open-xchange@oxgw00.kundenserver.de> 
Hello there!

I have a question, regarding date calculation.

I need to know the timestamp of the first (and last) second of a given day.

For Example:
I have the Date 12, 25th, 2008. 
But I want to know the unixtimestamp of 0:00:00 12, 25th, 2008 and 23:59:59 of 12,25th,2008.

Because of shift seconds this is not so easy as I thought.

Thanks for your help,
Bo
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