I have a 4500 that im using as a ntp server.  I have the clock set and it is using the EST time zone w/ summer recurring.  when i do a sh clock it has the correct time.  Why when I so a sh clock from a device using the 4500 as a ntp server does it not use EST time or the summer time.  its off by 4 hrs.
any ideas? 
-Thx