Although April Foolsâ€™ Day, also called All Foolsâ€™ Day, has been celebrated for several centuries by different cultures, its exact origins remain a mystery.Â
Some historians speculate that April Foolsâ€™ Day dates back to 1582, when France switched from the Julian calendar to the Gregorian calendar, as called for by the Council of Trent in 1563.Â
People who were slow to get the news or failed to recognize that the start of the new year had moved to January 1 and continued to celebrate it during the last week of March through April 1 became the butt of jokes and hoaxes.
These pranks included having paper fish placed on their backs and being referred to as â€œpoisson dâ€™avrilâ€ (April fish), said to symbolize a young, easily caught fish and a gullible person.
Historians have also linked April Foolsâ€™ Day to festivals such as Hilaria, which was celebrated in ancient Rome at the end of March and involved people dressing up in disguises.
Thereâ€™s also speculation that April Foolsâ€™ Day was tied to the vernal equinox, or first day of spring in the Northern Hemisphere, when Mother Nature fooled people with changing, unpredictable weather.
April Foolsâ€™ Day spread throughout Britain during the 18th century. In Scotland, the tradition became a two-day event, starting with â€œhunting the gowk,â€ in which people were sent on phony errands (gowk is a word for cuckoo bird, a symbol for fool) and followed by Tailie Day, which involved pranks played on peopleâ€™s derrieres, such as pinning fake tails or â€œkick meâ€ signs on them.
In modern times, people have gone to great lengths to create elaborate April Foolsâ€™ Day hoaxes. Newspapers, radio and TV stations, and Web sites have participated in the April 1 tradition of reporting outrageous fictional claims that have fooled their audiences.
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In 1957, the BBC reported that Swiss farmers were experiencing a record spaghetti crop and showed footage of people harvesting noodles from trees; numerous viewers were fooled. In 1985, Sports Illustrated tricked many of its readers when it ran a made-up article about a rookie pitcher named Sidd Finch who could throw a fastball over 168 miles per hour.
In 1996, Taco Bell, the fast-food restaurant chain, duped people when it announced it had agreed to purchase Philadelphiaâ€™s Liberty Bell and intended to rename it the Taco Liberty Bell. In 1998, after Burger King advertised a â€œLeft-Handed Whopper,â€ scores of clueless customers requested the fake sandwich.Â