Unrecognized time zone name error.

[Brad Nicholson <bnichols@xxxxxxxxxxxxxxx>]

This seems odd.  Any idea what's going on here?

template1=# SET TimeZone TO 'GMT';
ERROR:  unrecognized time zone name: "GMT"
template1=# SELECT version();
                                   version
-----------------------------------------------------------------------------
 PostgreSQL 8.1.5 on powerpc-ibm-aix5.3.0.0, compiled by GCC gcc (GCC)
3.3.2
(1 row)

-- 
Brad Nicholson  416-673-4106
Database Administrator, Afilias Canada Corp.