Merry Christmas, Part II

Some of the history of Christmas among Christians can be found in this article, a decent summary from Slate.

Yes, I think Jesus was probably born in September instead of December (based on some basic math from the gospels) but since we can't know the day in any case I don't see why it matters what day we celebrate it on. I don't celebrate the winter solstice, regardless of the fact that Christmas falls at the same time. And many people who celebrate the winter solstice don't celebrate Christmas just because it falls at the same time.