Re: date and UTC and GMT odd behaviour

[Andreas Schwab]

"Mike 'Mike' Jones" <address@hidden> writes:

> A little bit of trial-and-error and I find that the anomaly is limited to
> between 6pm, 23 Jun 1968 GMT and 2am, 31 Oct 1971:
>
> $ date -d "Sat Oct 31 01:59:59 UTC 1971" +%s
> 57722399
> $ date -d "Sat Oct 31 01:59:59 GMT 1971" +%s
> 57718799
>
> $ date -d "Sat Oct 31 02:00:00 UTC 1971" +%s
> 57722400
> $ date -d "Sat Oct 31 02:00:00 GMT 1971" +%s
> 57722400
>
> and
>
> $ date -d "Sun Jun 23 18:00:00 UTC 1968" +%s
> -48060000
> $ date -d "Sun Jun 23 18:00:00 GMT 1968" +%s
> -48063600
>
> $ date -d "Sun Jun 23 17:59:59 UTC 1968" +%s
> -48060001
> $ date -d "Sun Jun 23 17:59:59 GMT 1968" +%s
> -48060001

I can't reproduce that here.  I get the same (correct) output whether I
use UTC or GMT.

> This means that using:
> $ date -d "Tue Jan 01 00:00:00 GMT 1970 + NNNNN seconds"

Better use date -d "@NNNNNN".

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
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