April Fool's Day is celebrated in the Western world on April 1st of every year. It is also (call) All Fools' Day. It is not a legal(法定的) holiday. Even it has been celebrated for many years, it is still not (include) in the official list of holidays every year.
April Fool's Day is a day when people can play jokes and hoaxes each other. In the United States, Canada，France and South Korea, jokes and hoaxes last all day, and in some countries such Ireland, South Africa, New Zealand and the United Kingdom, they last only until noon.
In these countries if someone plays a trick on you in the afternoon, he or she will be called April Fool.
Here are two (piece) of real April Fool's Day news in history. On April 1st, 1946, Hawaii and Alaska were hit by a tsunami(海啸) that (kill) 165 people. On April 1st, 2002 WWE RAW changed its logo which is used until now.
A famous April Fool's Day hoax in history is when the Leaning Tower of Pisa was （announce） to have fallen over， many people
called the radio station to confirm (确认) the (surprise) news.
