On Feb 28, 2011, at 8:18 AM, Rob Richardson wrote:
> But when I tried this:
>
> select cast (extract(epoch from ('2010-3-14 12:00'::timestamptz - '2010-3-13 12:00'::timestamptz)) as integer) / 60 / 60
>
> I got 23, showing that even if I did not specify what time zone I’m talking about, I got the correct answer.
You didn't specify the time zone, so it used your local time zone info--but not just your current offset from UTC, rather the offsets from UTC at the dates/times specified.
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Scott Ribe
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