Well, that's a bit of a complicated question. The exact date of Jesus' birth is not known, and different religions and cultures celebrate his birth at different times. In the Christian tradition, December 25th is celebrated as the birth of Jesus Christ, known as Christmas. However, other religions such as the Eastern Orthodox Church celebrate his birth on January 6th, and some people believe that Jesus was actually born in the springtime. So, whether or not Jesus was born on December 25th is a matter of faith and tradition, rather than historical fact.