Hello, there is a bug which may not apply to all users.
For example: Birthday of one contact shows today, even its tommorow.
Next Birthday differs even its on the same day as another birthday.
Tried almost everything suggested in this thread regarding birthday odds, but the Trick was:

FYI >>> Changing visibility from 1 year to 6 months <<< FYI

Is this widget still getting updated? Hope so, its great
Even if not, hopefully the info may serve as being useful for some people..