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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Gold-wrapped chocolate coins commemorate St Nicholas who gave bags of gold coins to the poor.
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The first postage stamp to commemorate Christmas was issued in Austria in 1937.
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7.6 million Christmas trees are sold each year.
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'Klaxon' is a name that does not belong to one of Santa's reindeer. A klaxon is actually a powerful electric horn. Its name comes from a German word meaning "shriek".
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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.
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