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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Christmas trees become popular in the UK from 1841 when Prince Albert erected a tree in Windsor Castle following a German tradition. Fir trees have been decorated at Christmas time in Germany since the 8th century.
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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 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 first postage stamp to commemorate Christmas was issued in Austria in 1937.
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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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Nearly 60 million Christmas trees are grown each year in Europe.
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