When Jesus was born
Many theologians estimate that Jesus wasn't born on December 25 but sometime in September between 6BC and 30AD.
More Christmas Facts
In 1999, residents of the state of Maine in America built the world's biggest ever snowman. He stood at 113ft tall.
Rudolph the red-nosed reindeer was invented for a US firm's Christmas promotion in 1938.
There are 13 Santas in Iceland, each leaving a gift for children. They come down from the mountain one by one, starting on December 12 and have names like Spoon Licker, Door Sniffer and Meat Hook.