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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The twelve days of Christmas are the days between Christmas Day and Epiphany (6th of January) and represent the length of time it took for the wise men from the East to visit the manger of Jesus after his birth.
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Frumenty was a spiced porridge, enjoyed by both rich and poor. It was a forerunner of modern Christmas puddings. It is linked in legend to the Celtic god Dagda, who stirred a porridge made up of all the good things of the earth.
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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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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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The first postage stamp to commemorate Christmas was issued in Austria in 1937.
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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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Nearly 60 million Christmas trees are grown each year in Europe.
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