: A leading theory suggests the tradition began when France switched from the Julian to the Gregorian calendar. Those who continued to celebrate the New Year around April 1 (the spring equinox) instead of January 1 became the target of jokes and were called "April fools".
: Always reveal the joke with a playful "April Fools!" before things get too heated. April's Fool
: Never prank emergency services or hotlines, as this can have dangerous real-world consequences. Notable Cultural Works : A leading theory suggests the tradition began
The title "" also refers to specific cultural productions, such as: april's fool: return season | XS Entertainment : Never prank emergency services or hotlines, as
: Some link the day to the ancient Roman festival of Hilaria , celebrated in late March with masquerades and "general good cheer" where participants inverted the social order.