Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
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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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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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At Christmas, it is traditional to exchange kisses beneath the mistletoe tree. In ancient Scandinavia, mistletoe was associated with peace and friendship. That may account for the custom of "kissing beneath the mistletoe".
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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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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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Carols began as an old English custom called wassailing, toasting neighbours to a long life.
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