May 31st is officially No Tobacco Day and Save Your Hearing Day.
The video for Psy's Gangnam Style reached two billion views on YouTube.
The Discovery Space Shuttle was launched from the Kennedy Space Center on mission STS-124.
Rihanna released her third studio album titled 'Good Girl Gone Bad.'
Harry Potter and the Prisoner of Azkaban, the 3rd film based on the books by J. K. Rowling, was released in UK cinemas.
A 7.9 magnitude earthquake hit the coast of Peru, killing as many as 70,000 people.
Imperial Japan began a series of submarine attacks on Sydney.
20th Century Fox was founded after a merger of Fox Film Corporation and Twentieth Century Pictures.
The RMS Titanic was launched from Belfast, where it was also constructed.
Congress passed the Enforcement Act.
The New Orleans Minting facility closed.
The Copyright Act of 1790 became the first federal copyright act to be established in the United States.
English civil servant Samuel Pepys recorded his last diary entry.
Battle of the Kalka River occurred.
Ramesses II, also known as Ramesses the Great, became the third pharaoh of the 19th Dynasty of Egypt.
