April Fool day is everyone's favourite and it lasts for several weeks. Jokes, hoaxes, harmless pranks, foolish funny things are the essence of this day. It is also called as All Fool's Day.
Do you ever wonder how it all started with? If no then here is the popular story about this day. 
One of the earliest and first reported an instance of April 1 as fool's day was in Geoffrey Chaucer's, The Canterbury Tales. Earlier New Year's Day was celebrated around April. In 1582, the Gregorian Calendar was introduced by Pope Gregory XIII which made celebrated January 1 as the New Year's Day. However, many refused to accept it and continued to celebrate New Year's Day in April. Others started mocking those refusing to accept January 1 as New Year's Day and would send them on "fool's errands", which is how the practice of April Fools' day caught on. Other instances link April Fools' Day to ancient Roman festival Hilaria, where people would dress up in disguises and enjoy the spring.

In India, there have been numerous evidence to April Fools' Day in cinema and popular literature. People look for ways and pranks to fool their friends, colleagues, and neighbours. Once the target victim falls for the prank, the prankster shouts out loud "April fool!".