On Aug 28, 2007, at 19:30 , Tom Lane wrote:
> Michael Glaesemann <grzm@seespotcode.net> writes:
>> Note that interval '1 day' is not equal to interval '24 hours'. '1
>> day' can be 23 or 25 hours across daylight saving time boundaries.
>
> When you are adding to timestamp without time zone, they *are*
> interchangeable, since no daylight-savings arithmetic is involved.
> Michael's right for the case of adding to timestamp with time zone,
> though.
Ah, right. Thanks for pointing that out.
Michael Glaesemann
grzm seespotcode net