Birth Year of Christ
New testament states no year for Jesus birth. The Christmas date was a mistake according to a Scythian monk. Dionesius Exegus. Someone from the Catholic church added a wrong number; born 3 BCE.
Jarome Biblical Commentary has essay by Cardinal Fitsmier, one of the most influential writes for the pope. He says the birth definitely did not occur in AD 1. The error introduced 533 by Dionesius