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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Coca Cola was the first beverage company to use Santa for a winter promotion.
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Santa Claus has many different names around the world including Father Christmas in the UK, Pere Noel in France, Kriss Kringle in Germany, La Befana in Italy, Julinesse in Denmark, Dedushka Moroz (meaning Grandfather Frost) in Russia and the Three Kings i
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Electric lights for trees were first used in 1895.
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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 world's tallest Xmas tree at 221ft high was erected in a Washington shopping mall in 1950.
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