Odd timezone backend output

I am confused about the below results.  The backend is in EDT but it is 
converting timestamps into EST ... excluding NOW().  Regardless of the 
timezone provided, the backend is di****ng out EST.

[root@[EMAIL PROTECTED]
 ~]# uname -a
2.6.9-67.0.4.EL #1 Sun Feb 3 06:53:29 EST 2008 i686 athlon i386 GNU/Linux

[root@[EMAIL PROTECTED]
 ~]# date
Thu May  1 09:54:17 EDT 2008

postgres=# select version();
PostgreSQL 8.3devel on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 
3.4.6 20060404 (Red Hat 3.4.6-8)

postgres=# set datestyle='Postgres, MDY';
postgres=# select now();
                  now
-------------------------------------
  Thu May 01 09:28:53.164084 2008 EDT

postgres=# select '1997-01-29 12:31:42.92214 EDT'::timestamptz;
             timestamptz
------------------------------------
  Wed Jan 29 11:31:42.92214 1997 EST

postgres=# select '1997-01-29 12:31:42.92214 PST'::timestamptz;
             timestamptz
------------------------------------
  Wed Jan 29 15:31:42.92214 1997 EST

Is this expected behavior?  I am not sure if I am missing something or 
my results are wrong.  Is there a setting that needs tweaking?

-- 
Andrew Chernow
eSilo, LLC
every bit counts
http://www.esilo.com/

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