April Fools' Day originated from a joke in France where people who were slow to change calendars in 1582 were tricked into celebrating the New Year in March or April and became the butt of jokes. It is also linked to an ancient Roman festival where people wore disguises. Some speculate it is tied to the unpredictable weather near the vernal equinox. The tradition spread throughout Europe in the 18th century and modern pranks have included fake news reports about spaghetti crops, a baseball pitcher who could throw at unprecedented speeds, and fast food companies renaming iconic landmarks.