December 25?

'TIS THE SEASON: Why is Christmas on December 25? (Anthony Le Donne, The Jesus Blog).

From the modern historian’s perspective, we must conclude that we haven’t the first clue of Jesus’ birthdate. Rather, December 25 is a theological guess that was not widely commemorated until the 6th century. What I find most interesting, however, is that commemorating the life of Jesus restructured how Christians thought about their annual calendar. Conversely, once a commemorative calendar had been established, these traditions eventually restructured how Christians thought about Jesus.

Cross-file under Asking the Important Questions.