It’s true, we don't know the actual birthday of Jesus.
One of the reasons that Dec. 25th was chosen was that it gave the faithful Christians of the Roman Empire an alternative to celebrating the extravagant pagan Feast of Saturnalia, the major yearly celebration of Rome focused on the god Saturn. It was linked to the Winter Solstice as days became longer and people looked forward to Spring.
With the advent of Jesus Christ, a new, more personal meaning was offered in the midst of the dark midwinter of the northern hemisphere.
Simply said, Christmas proclaimed that God was with us in real and tangible ways even in the darkest days of the year, even in