Re: Re: Problem with Dates

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Christopher Sawtell <csawtell(at)xtra(dot)co(dot)nz>
Cc: "Glen and Rosanne Eustace" <agree(at)godzone(dot)net(dot)nz>, pgsql-sql(at)postgresql(dot)org
Subject: Re: Re: Problem with Dates
Date: 2001-01-26 15:05:15
Message-ID: 29575.980521515@sss.pgh.pa.us
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Christopher Sawtell <csawtell(at)xtra(dot)co(dot)nz> writes:
> On Fri, 26 Jan 2001 12:46, Glen and Rosanne Eustace wrote:
> [ ... ]

>> template1=# select '31/12/2000'::date + '365 days'::timespan;
>> ?column?
>> ------------------------
>> 2002-01-01 00:00:00+13 <<<<<<<<<<< Wrong
>> (1 row)

> [ ... ]

> I get the same result. This business of crooked dates in NZ summertime
> is frequently because the rest of the world can't twig on to the notion that
> it is possible to have GMT + 13, and do not take account of it in date/time
> calculations.

Could one of you try it in 7.1 (beta3 or later)? We've changed some
details of the way daylight-savings transitions are handled in
date-to-timestamp conversions, so I think this might be fixed now.
It's worth checking anyway.

Also, what do you get from '31/12/2000'::date::timestamp?

regards, tom lane

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