Moreover, the tradition of a December 25th celebration does not find a place on the Roman calender until after the Christianization of Rome.
The “Birthday of the Unconquered Son” holiday was scarcely traditional and hardly popular.
Each course served one week in the temple for two times each year.
The course of Abias served during the eighth week and the thirty-second week in the annual cycle.* However, when did the cycle of courses begin?
It is now commonly assumed that our Lord Jesus Christ was not born on December 25th.