Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
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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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In 1999, residents of the state of Maine in America built the world's biggest ever snowman. He stood at 113ft tall.
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Carols began as an old English custom called wassailing, toasting neighbours to a long life.
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The Queen's Christmas speech was first televised in 1957.
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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 poinsettia is a traditional Christmas flower. In Mexico (its original birthplace), the poinsettia is known as the "Flower of the Holy Night".
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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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