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
The sun sets on 24 December at 3.55pm in the UK, and rises the following morning at 8.05am.
81
The tradition of putting tangerines in stockings comes from 12th-century French nuns who left socks full of fruit, nuts and tangerines at the houses of the poor.
42
Carols began as an old English custom called wassailing, toasting neighbours to a long life.
33
The poinsettia is a traditional Christmas flower. In Mexico (its original birthplace), the poinsettia is known as the "Flower of the Holy Night".
15
The Christmas tree displayed in Trafalgar square in London is an annual gift to the UK from Norway since 1947. The Norwegian spruce given is a token of appreciation of British friendship during World War II from the Norwegian people.
35
Electric lights for trees were first used in 1895.
62
Nearly 60 million Christmas trees are grown each year in Europe.
74