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What is an April fool?
Why is April 1st significant for playing pranks?
The origin of this tradition is unclear, but it is believed to have started in France in the 16th century. April 1st was traditionally the start of the New Year in France, but in 1582, the country switched to the Gregorian calendar, which moved the start of the New Year to January 1st. Some people refused to accept the change and continued to celebrate on April 1st, becoming the butt of jokes and hoaxes.