Calendar problem/question

Hello

Calendar question: I have HTC Thunderbolt. All software is up to date. In my Calendar, I have google, contacts, pc & facebook all checked. However, in my calendar, not all of my facebook contact’s birthdays are showing up.
Yes their birthday is listed, because when I go to their contact information in my people app, it’s there.

So even if it isn’t imported from facebook, shouldn’t it be on the calendar because I have the contacts calendar checked?

Try This, It solved my Problem:
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