Though many people practice this jokes all through April, which shouldn’t be the case, this celebration was initiated to take place on every 1st of April.
The jokes and their victims are called April fools. People playing April Fool jokes often expose their prank by shouting "April fool(s)" at their victim(s). Some newspapers, television, magazines and other published media report fake stories, which are usually explained the next day or below the news section as part of April fool.
Some scholars associate April fool with New year celebration
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, through 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. The use of January 1 as New Year's Day became common in France only by the mid-16th century, and the date was not adopted officially until 1564, thanks to the Edict of Roussillon.
While in Netherlands some attribute April fool to Dutch victory
In the Netherlands, the origin of April Fools' Day is often attributed to the Dutch victory at Brielle in 1572, where the Spanish Duke Álvarez de Toledo was defeated. "Op 1 april verloor Alva zijn bril" is a Dutch proverb, which can be translated to: "On the first of April, Alva lost his glasses." In this case, the glasses ("bril" in Dutch) serve as a metaphor for Brielle. This theory, however, provides no explanation for the international celebration of April Fools' Day.
This particular theory doesn’t really relate with April fool because no one was fooled!
This joke ends at noon though some in Africa still extends it through the month
If you still practice your jokes after noon that make you tge April fool.
The April Fish
Sounds funny right? LOL
In Italy, France, Belgium and French-speaking areas of Switzerland and Canada, April 1 is often known as "April fish" (poissons d'avril in French, april vis in Dutch or pesce d'aprile in Italian).
This celebration includes attempting to attach a paper fish to the victim's back without being noticed.
Such fish feature is prominently present on many late 19th- to early 20th-century French April Fools' Day postcards. Many newspapers also spread a false story on April Fish Day, and a subtle reference to a fish is sometimes given as a clue to the fact that it is an April fool's joke.