April Fools' Day is celebrated in different countries around the world on 1st April in every year. Sometimes referred to as All Fools' Day, 1st April is not a national holiday, but is widely recognized and celebrated as a day when many people play all kinds of jokes and foolishness.
Originally, New Year's Day was April 1. Later, when the Church changed the calendar, they also changed the date for the first of the year. However, some people continued using April 1 as the date of the new year. These people were referred to as "April Fools" .
This harassment evolved, over time, into a tradition of prank-playing on the first day of April. The tradition eventually spread to England and Scotland in the eighteenth century. It was later introduced to the American colonies of both the English and French. April Fool's Day thus developed into an international fun fest, so to speak, with different nationalities specializing in their own brand of humor at the expense of their friends and families.
April Fools' Day is observed throughout the Western world. Practices include sending someone on a "fool's errand," looking for things that don't exist; playing pranks; and trying to get people to believe ridiculous things.
The French call April 1 Poisson d'Avril, or "April Fish." French children sometimes tape a picture of a fish on the back of their schoolmates, crying "Poisson d'Avril" when the prank is discovered.