Re: Why the discrepancy in date?

Dotan Cohen wrote:
On Sun, Jan 8, 2012 at 14:06, Nils Kassube <kassube@xxxxxxx> wrote:
However, for dates in the past they do not:
✈saturn:~$ date +%s -d 2006-12-31t22:00
1167577200

Interesting - why do you use "t" instead of " " as a separator
between date and time?

Because then I do not need the quotes. It is also ISO standard 8601:
http://en.wikipedia.org/wiki/ISO_8601

Ah, that's the reason - I didn't know about that standard.

So to me it looks like your "t" separator makes the date command
use the time zone UTC+7 intead of your local time zone.
Furthermore, if I specify a time zone together with your "t"
separator, date complains about an invalid date:

~/ > LC_ALL=C date +%s -d "2006-12-31t22:00 UTC"
date: invalid date `2006-12-31t22:00 UTC'

Even specifying UTC (that is the Z timezone) doesn't help:
✈saturn:~$ date +%s -d "2006-12-31 22:00Z"
1167602400
✈saturn:~$ date -d @1167602400
Mon Jan 1 00:00:00 IST 2007

But that looks correct to me - if IST = UTC+2, then "2006-12-31 22:00Z"
is the same as "Mon Jan 1 00:00:00 IST 2007", isn't it?

I do not believe that there should be a difference when using the T
separator.

Agreed, it seems there is a bug in the date command. When it reads that
"t" separator it shouldn't take it as a time zone.


Nils

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