Coca Cola was the first beverage company to use Santa for a winter promotion.
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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 abbreviation Xmas isn't irreligious. The letter X is a Greek abbreviation for Christ.
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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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The Queen's Christmas speech was first televised in 1957.
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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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Many theologians estimate that Jesus wasn't born on December 25 but sometime in September between 6BC and 30AD.
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There are 13 Santas in Iceland, each leaving a gift for children. They come down from the mountain one by one, starting on December 12 and have names like Spoon Licker, Door Sniffer and Meat Hook.
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