There are many holidays that celebrate national heroes, religious events, and important dates in history, but April 1 is the only day that celebrates pranks, practical jokes and foolishness. Origins of this day are shrouded in mystery. One theory is that in the 1500s when France changed their calendar to begin in January rather than April, news of the change traveled slowly. Those individuals that were last to hear became the butt of others jokes and were often referred to as “April Fools”.
Another theory is that April Fools Day is what’s left over from an old Roman custom called the Festival of Hilaria, a socially accepted time for foolishness around that time of the year, give or take a few weeks.
However, these are mere theories. The real story of April Fools Day is available below: