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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Nearly 60 million Christmas trees are grown each year in Europe.
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In Greek legend, malicious creatures called Kallikantzaroi sometimes play troublesome pranks at Christmas time. In order to get rid of them, salt or an old shoe is burnt. The pungent burning stench drives off, or at least helps discourage, the Kallikantza
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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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Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
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Electric lights for trees were first used in 1895.
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The first Christmas card was designed in 1843 by J.C. Horsley.
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