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.
415
Many theologians estimate that Jesus wasn't born on December 25 but sometime in September between 6BC and 30AD.
42
The world's tallest Xmas tree at 221ft high was erected in a Washington shopping mall in 1950.
82
There are 13 Santas in Iceland, each leaving a gift for children. They come down from the mountain one by one, starting on December 12 and have names like Spoon Licker, Door Sniffer and Meat Hook.
191
The sun sets on 24 December at 3.55pm in the UK, and rises the following morning at 8.05am.
81
The abbreviation Xmas isn't irreligious. The letter X is a Greek abbreviation for Christ.
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