"Anibal David Acosta" <aa@xxxxxxxxxxxx> writes: > This query returns false > select ('2012-11-20 17:00:00-02:00'::timestamp with time zone) = > ('2012-11-20 18:00:00-03:00'::timestamp with time zone) > But are exactly same time No, they aren't. You're apparently still confused about the sign of timezone offsets. The first one corresponds to 19:00 GMT, the second to 21:00 GMT. BTW, why are you posting the exact same question you posted two days ago on another list? regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin