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 sun sets on 24 December at 3.55pm in the UK, and rises the following morning at 8.05am.
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Carols began as an old English custom called wassailing, toasting neighbours to a long life.
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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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Although now mostly vegetarian, in Victorian times, mince pies were made with beef and spices.
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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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Electric lights for trees were first used in 1895.
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