I don’t celebrate Christmas at all, at least personally, I do go to church though and they celebrate it through a lot. I even take part in the celebration and then I’m a bass player and I play in the praise band.
I believe the most likely date of Christ’s birth is, oddly enough, September 11th.
Debunked.
It sounds like you have a good church. The birth of Christ is extrapolated from the timeline when Mary visited Elizabeth who was 6 months pregnant with John the Baptist after Mary was visited by Gabriel. I'm sure God will forgive us if we do have the wrong day in September though, as there are many theories about that. I have chosen September 29th.
Finishing up a book called The Star of Bethlehem by Michael R. Molnar. He puts the birth on April 17, 6 b.c., based on the Star charts that the “three wise men” used that led them to baby Jesus. Lots of history, math, and Star charts. Coins minted in the day led to new clues.