April Fools' Day, celebrated annually on April 1st, is a light-hearted holiday known for pranks and jokes. While its origins are somewhat unclear, the day has been celebrated for centuries across various cultures. Some historians trace its roots back to 16th-century France when the calendar reform shifted the New Year's celebration from April 1st to January 1st, causing those still celebrating in spring to be dubbed "April fools." Today, people worldwide participate in playful antics, with both individuals and media outlets getting involved in the spirit of fun and surprise.