June 21st is known as International T-shirt Day and Daylight Appreciation Day.
Carl Nassib became the first openly-gay NFL player to play a regular-season game.
The guitar that Kurt Cobain used during Nirvana's 1993 MTV Unplugged in New York show sold for $6 million.
Two newly discovered moons orbiting Pluto were named Nix and Hydra.
J.K. Rowling published the 5th Harry Potter book 'The Order of the Phoenix.'
Burning the US flag was deemed legal.
John Hinckley, who tried to kill President Reagan, was found not guilty on the grounds of insanity.
The most memorable concert of the decade occurred at Wembley Stadium.
Louis St. Laurent resigned as the prime minister of Canada.
Manchester Mark I computer became the first stored computer to run a program at a lab at Manchester University, UK.
Construction on the world's longest railway in Russia was completed.
The US Navy claimed the island of Guam, which was previously under Spanish control.
Cyrus McCormick patented the reaping machine.
The British Army defeated Irish rebels at the Battle of Vinegar Hill.
King Louis XVI, Marie Antoinette, and their immediate family fled their home at the beginning of the French Revolution.
New Hampshire became the 9th state to join the United States of America.
A Dutch pensions advisor, Johan de Witt, was severely wounded in a knife attack.