Hi, I also have the same problem as yours. I found where the data for Birthday events is saved. It is not saved as we expect in "CalendarDB-PDat" data base, but it is saved in "ContactsDB-PAdd". This DB has 365 records and as you can guess these records matches the days in year days. So far so good, but I still don't know the exact format of these records as you. I think it is not described anywhere:(.
So if you find some info about this please share it with me, I will be gratefull! -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
