Lots of people believe in the God of Isaac and Abraham, but don't celebrate Christmas. Jews, and Muslims come to mind. That's probably an equal, or greater-than number.
I'm not crying, I'm just saying that you don't know enough about the topic to open your mouth. I bet you thought that Jesus' birthday was on the 25th. I did, when I was 7. Here's an idea: let's celebrate the 4th of July in March, and New Year's Day in October!
If you want to make a religious holiday to celebrate the birth of Jesus, celebrate it when he was born. How hard is that?
More information about formatting options