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.
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Carols began as an old English custom called wassailing, toasting neighbours to a long life.
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Rudolph the red-nosed reindeer was invented for a US firm's Christmas promotion in 1938.
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The 26th of December is traditionally known as St Stephen's Day, but is more commonly known as Boxing Day. The reason it was called this is either alms boxes in church were opened and the money distributed to the poor, or alternatively it was named from t
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The sun sets on 24 December at 3.55pm in the UK, and rises the following morning at 8.05am.
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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.
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Many theologians estimate that Jesus wasn't born on December 25 but sometime in September between 6BC and 30AD.
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