US scientists calculated that Santa would have to visit 822 homes a second to deliver all the world's presents on Christmas Eve, travelling at 650 miles a second.
415
One town in Indiana is called Santa Claus. There is also a Santa, Idaho.
122
The sun sets on 24 December at 3.55pm in the UK, and rises the following morning at 8.05am.
81
Many theologians estimate that Jesus wasn't born on December 25 but sometime in September between 6BC and 30AD.
42
Rudolph the red-nosed reindeer was invented for a US firm's Christmas promotion in 1938.
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Christmas trees become popular in the UK from 1841 when Prince Albert erected a tree in Windsor Castle following a German tradition. Fir trees have been decorated at Christmas time in Germany since the 8th century.
20
Black Friday in the UK is the Friday before Christmas. Instead of shopping, many people get very drunk!
10
Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
20