Text of appointment is incorrect when received on device

Appointment sent from GW client for date after November 4 - for example 11/6/2012 from 12:00 to 14:00. When received on iPad, text of appointment shows time of appointment as 01:00 PM - 03:00 PM instead of 12:00 PM - 02:00 PM. Appointment shows correctly on GW calendar and on iPad calendar. Only text is incorrect.
Has anyone else seen this?
Data Synchronizer 1.2.4 Build 966 - GroupWise 8.0.2
Thanks in advance.
Susan