Quote Originally Posted by drone View Post
No, it would be better to explain that March 25th is the Annunciation and thus the conception of Christ. Therefore, given a 9 month gestation period, Jesus would have been born on December 25th, so yes, Christmas is Jesus' birthday.
Spoiler Alert, click show to read: 
And the next question from the little lemur will be, "What's conception and gestation?"
Yes, but that doesn't actually address the issue, because Jesus was probably born in the Autumn (there are astrological indications of this).

Ultimately, the early Church did not know when most Saints were born, only when they died. The same logic can be applied to Jesus, the precise date of his birth is irrelevant, because it is his death and ressurection that matter.