The sun sets on 24 December at 3.55pm in the UK, and rises the following morning at 8.05am.
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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 first postage stamp to commemorate Christmas was issued in Austria in 1937.
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The world's tallest Xmas tree at 221ft high was erected in a Washington shopping mall in 1950.
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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 definition of a white Christmas in the UK is for a single snow flake (perhaps amongst a shower of mixed rain and snow) to be observed falling in the 24 hours of December 25th.
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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 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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