General
April Fool's Day
Canada and USA
About
April Fools' Day, observed on April 1 across many countries, is an informal day for playing practical jokes and hoaxes. Its exact origins are uncertain, but the tradition of light-hearted pranks has been recorded for centuries.
Learn more
https://learnenglish.britishcouncil.org/general-english/magazine-zone/april-fools-day