<rich:calendar id="startdate"
 timeZone="#{sessionPrefs.tz}"
 value="#{bean.Home.instance.startTimeTemp}"
 datePattern="MM/dd/yyyy HH:mm z" >

 </rich:calendar>

this calendar in first load showed date like this "11/04/2007 05:00 EST", but after pick a new date it changed to "10/22/2008 12:00 z", time zone became to "z", will it go wrong?

Thanks.