But some put forward another, less well-known explanation for the Dec. 25 date—one with appeal for anyone uncomfortable with a connection between Christmas and the old solstice festivals. According to some scholars, Christmas was set near the winter solstice not because of any pagan traditions but based on a series of arcane calendrical computations. This argument hinges on an ancient Jewish tradition that had the great prophets dying on the same dates as their birth or, alternatively, their conception. Thus, to follow this peculiar assumption, the first step in dating Jesus’ birth would be to date his death, which the Gospels say happened at Passover. The early Christian writer Tertullian calculated that the date given for Jesus’ death in John’s Gospel corresponds to March 25 in the Roman calendar. Many Christian churches came to celebrate the Feast of the Annunciation, marking the angel Gabriel’s visit to the Virgin Mary to tell her that she would become the mother of Jesus, on this date. Adding nine months to this date produces a Dec. 25 Christmas.