Why April Fools' Day Pranks Rule April 1

April Fools' Day brings global pranks and jokes on April 1, a tradition falling on a Wednesday in 2026. People surprise friends, family, and colleagues with harmless tricks before yelling "April Fools!" The most popular theory traces it to 1582, when France switched to the Gregorian calendar, moving New Year's from around April 1 to January 1. Those slow to adapt became joke targets, called "April fools. Read more about this...