Re: date-madness

[Philip Rowlands]

On Fri, 10 Dec 2004, Mats Blomstrand wrote:

>    $ gdate -d "saturday 24:00"
>    gdate: invalid date `saturday 24:00'

That's not allowed; the hour must be 00-23, according to the
documentation.

>And it gets even more strange when one asking for calculations:
>
>    $ gdate -d "sunday 00:01"
>    Sun Dec 12 00:01:00 CET 2004
>
>    $ gdate -d "sunday 00:01 +3 hours"
>    Sun Dec 12 01:58:07 CET 2004

To rephrase that one and make it a little more obvious what I think's
happening:
$ date -d 'next sunday 00:01 +0003 +1 hour'
i.e. you're asking to offset the timezone by three minutes

To get the calculation you want, try:
$ date -d 'sunday 00:01 3hour'


Cheers,
Phil