No, God's birthday is not on Christmas. While Christmas is a Christian holiday that celebrates the birth of Jesus Christ, it is not considered to be God's birthday. In fact, the date of Jesus' birth is not known for certain and is based on tradition rather than historical evidence. God's birthday is typically celebrated on Easter, which is a holiday that commemorates Jesus' resurrection. However, some Christians believe that God's birthday should be celebrated on December 25th, as it is the date that is traditionally associated with Christmas.