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Christmas celebrates the nativity story, but the Bible makes no reference to Jesus being born in December. If anything, scholars believe it's more likely Jesus was born sometime in the spring ( Luke’s gospel suggests there were shepherds in the field on the first Christmas, which wouldn't have been likely in the dead of winter.) Some believe December 25 turned up as a Christian alternative to the Roman pagan celebrations of midwinter, which occurred in late December. Others think the day may have been derived from "a calculation based on an assumed date of crucifixion of April 6 coupled with the ancient belief that prophets died on the same day as their conception," according to Religion Facts