What's April Fool's Day? | Holidays | England It’s celebrated every year on 1st April by playing practical jokes and pranks on people and the victims are often called April fools. This is the day when you can be a little mischievous and be easily forgiven. April Fool’s Day has been celebrated in the UK since the 19th century. Let's laugh together on the TOP 10 April Fool's Day Prank Which is your favourite? Leave a comment below. I guess I'll make this mouldy bread using gr