Getting date with timezone offset

Question

I am trying to extract the date from a query in postgres. The timestamp is stored as UTC, so if I have 1/1/2014 02:00:00, I want the date in pacific time, to be 12/31/2013,

Answer 1

If it is timestamp without time zone you need first to tell it to use the UTC time zone and then convert to another time zone:

SELECT '1-1-2014 02:00:00'::timestamp at time zone 'UTC' at time zone 'America/Los_Angeles';
      timezone       
---------------------
 2013-12-31 18:00:00