The traditional date of December 25 goes back as far as AD 273. Two pecan festivals honoring the sub were celebrated on the day and it is possible that December 25 was chosen to counteract the inflow paganism.
To this day some people feel uncomfortable with Christmas because they think it is somehow tainted by the pagan festivals held on this day. But Christians have long believe that the gospel not only transcends culture, it also transforms it. In A.D. 320 one theological answered this criticism by noting “We hold this day Holy, not like the pagans because of the birth of the sun, but because of Him who made it,”
Having said that, you may ask, “Does it really matter?” In one sense of course, the answer is no. No doctrine of the Christian faith rests upon knowing the exact day and year of Christ’s birth. And no stress is put upon the date on His birth in the New Testament. No one is ever told to celebrate Christmas. The emphasis always rests on the fact of His birth, not the date. But that doesn’t tell the whole story. Christianity is a faith based on certain historical facts. Let us on this Christmas Eve rejoice in this great truth.
“For unto you is born this day in the city of David a Savior, who is Christ the Lord.” Luke 2:11