5. Reset $ENV{TZ} to its original value so it doesn't muck up any other date calculations elsewhere in the code

You could of course localize %ENV: 

{
    local $\ = "\n";
    print scalar localtime;
    {
        local %ENV;
        $ENV{TZ} = 'GMT';
        print scalar localtime;
    }
    print scalar localtime;
}

[download]
yields: 
Wed May 29 23:29:08 2002
Wed May 29 21:29:08 2002
Wed May 29 23:29:08 2002

[download]

Update/PS: -- for frontpaging your own node. Don't do that. 

- Yes, I reinvent wheels.
- Spam: Visit eurotraQ.

In reply to Re: Determining Daylight Savings Time by Juerd
in thread Determining Daylight Savings Time by Starky

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