Like I mentioned recently, I just upgraded my old BlackBerry to a BlackBerry bold.
One very nice application I had in my old BlackBerry is Google Sync, it allows seamless synchronization between the BlackBerry calendar and Google calendar.
Of course, one of the first things I did when I got my new BlackBerry was to install Google Sync. Well, yesterday I added a new appointment to Google calendar, and when I check the appointment on my BlackBerry Bold I noticed that the time for the appointment is wrong, it is set to 5 hours later than the correct time.
Turns out that the BlackBerry Bold comes preset to Greenwich Mean Time (GMT), but of course I am not in that timezone, instead I am on Eastern Standard Time (EST). When synchronizing between Google Calendar and the BlackBerry bold, the timezone conversion was done automatically.
Once I found out what the issue was the solution was trivial, set up the timezone in the BlackBerry bold to EST by going to Settings | Options | Date/Time
and setting the correct time zone.