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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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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Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
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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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The Queen's Christmas speech was first televised in 1957.
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Black Friday in the UK is the Friday before Christmas. Instead of shopping, many people get very drunk!
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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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