Many theologians estimate that Jesus wasn't born on December 25 but sometime in September between 6BC and 30AD.
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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 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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Gold-wrapped chocolate coins commemorate St Nicholas who gave bags of gold coins to the poor.
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One town in Indiana is called Santa Claus. There is also a Santa, Idaho.
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Rudolph the red-nosed reindeer was invented for a US firm's Christmas promotion in 1938.
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