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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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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The abbreviation Xmas isn't irreligious. The letter X is a Greek abbreviation for Christ.
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Electric lights for trees were first used in 1895.
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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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Nearly 60 million Christmas trees are grown each year in Europe.
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English Puritan leader Oliver Cromwell banned Christmas between 1647 and 1660 because he believed such celebrations were immoral for the holiest day of the year.
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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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