Thursday Apr 1, 1582 to Present
WorldwideApril Fools' Day or April Fool's Day (sometimes called All Fools' Day) is an annual custom on April 1, consisting of practical jokes and hoaxes. The player of the joke or hoax often exposes their action later by shouting "April fools" at the recipient.
Some writers suggest that April Fools' originated because in the Middle Ages, New Year's Day was celebrated on March 25 in most European towns, with a holiday that in some areas of France, specifically, ended on April 1, and those who celebrated New Year's Eve on January 1 made fun of those who celebrated on other dates by the invention of April Fools' Day.
In the UK, an April Fool prank is sometimes later revealed by shouting "April fool!" at the recipient, who becomes the "April fool". A study in the 1950s, by folklorists Iona and Peter Opie, found that in the UK, and in countries whose traditions derived from the UK, the joking ceased at midday.
In 1969, the public broadcaster NTS in the Netherlands announced that inspectors with remote scanners would drive the streets to detect people who had not paid their radio/TV tax ("kijk en luistergeld" or "omroepbijdrage"). The only way to prevent detection was to wrap the TV/radio in aluminium foil. The next day all supermarkets were sold out of their aluminium foil, and a surge of TV/radio taxes were being paid.
Jovian–Plutonian gravitational effect: In 1976, British astronomer Sir Patrick Moore told listeners of BBC Radio 2 that unique alignment of two planets would result in an upward gravitational pull making people lighter at precisely 9:47 am that day. He invited his audience to jump in the air and experience "a strange floating sensation". Dozens of listeners phoned in to say the experiment had worked, among them a woman who reported that she and her 11 friends were "wafted from their chairs and orbited gently around the room."
Great Blue Hill eruption prank: On April 1, 1980, Boston television station WNAC-TV aired a fake news bulletin at the end of the 6 o'clock news which reported that Great Blue Hill in Milton, Massachusetts was erupting. The prank resulted in panic in Milton, where some residents began to flee their homes. The executive producer of the 6 o'clock news, Homer Cilley, was fired by the station for "his failure to exercise good news judgment" and for violating the Federal Communications Commission's rules about showing stock footage without identifying it as such.
In 1993, a radio station in San Diego, California told listeners that the US Space Shuttle had been diverted to a small, local airport. Over 1,000 people drove to the airport to see it arrive in the middle of morning rush hour. There was no shuttle flying that day.
The negative view describes April Fools' hoaxes as "creepy and manipulative", "rude" and "a little bit nasty", as well as based on schadenfreude and deceit. When genuine news or a genuine important order or warning is issued on April Fools' Day, there is risk that it will be misinterpreted as a joke and ignored. For example, when Google, known to play elaborate April Fools' Day hoaxes, announced the launch of Gmail with 1-gigabyte inboxes in 2004, an era when competing webmail services offered 4-megabytes or less, many dismissed it as a joke outright. On the other hand, sometimes stories intended as jokes are taken seriously. Either way, there can be adverse effects, such as confusion, misinformation, waste of resources (especially when the hoax concerns people in danger) and even legal or commercial consequences.