#3 Christmas supposedly marks the birth of Jesus Christ on December 25. But there are no notes of December 25 in the Bible and most historians actually believe he was born in the spring.
(Interesting Christmas facts)
History shows that December 25 was popularized as the date for Christmas, not because Christ was born on that day, but because it was already popular in pagan religious celebrations as the birthday of the sun. But could December 25 be the date of Christ’s birth? (source: United Church of god)