The first piece of suspected debris from Malaysia Airlines Flight 370 is discovered on Réunion Island.
Astronomers announce their discovery of the dwarf planet Eris.
British Prime Minister Margaret Thatcher and President of France François Mitterrand sign the agreement to build a tunnel under the English Channel (Channel Tunnel).
Prime Minister of India Rajiv Gandhi and President of Sri Lanka J. R. Jayewardene sign the Indo-Sri Lanka Accord on ethnic issues.
Iran adopts a new "holy" flag after the Islamic Revolution.
In New York City, David Berkowitz (a.k.a. the "Son of Sam") kills one person and seriously wounds another in the first of a series of attacks.
Greeks vote to abolish the monarchy, beginning the first period of the Metapolitefsi.
Vietnam War: Off the coast of North Vietnam the USS Forrestal catches on fire in the worst U.S. naval disaster since World War II, killing 134.
Vietnam War: The first 4,000 101st Airborne Division paratroopers arrive in Vietnam, landing at Cam Ranh Bay.
First United States Congress elections in Hawaii as a state of the Union.
U.S. President Dwight D. Eisenhower signs into law the National Aeronautics and Space Act, which creates the National Aeronautics and Space Administration (NASA).
Olympic Games: The Games of the XIV Olympiad: After a hiatus of 12 years caused by World War II, the first Summer Olympics to be held since the 1936 Summer Olympics in Berlin, open in London.
Great Depression: In Washington, D.C., troops disperse the last of the "Bonus Army" of World War I veterans using arson, bayonets, sabers, tanks, tear gas, and vomit gas.
United States and Japan sign the Harris Treaty.
War of the Grand Alliance: Battle of Landen: France wins a victory over Allied forces in the Netherlands.
The widowed Mary, Queen of Scots marries Henry Stuart, Lord Darnley, Duke of Albany, at Holyrood Palace, Edinburgh, Scotland, in a Catholic ceremony.
Sack of Thessalonica: Saracen raiders under Leo of Tripoli sack Thessaloniki, the Byzantine Empire's second-largest city, after a short siege, and plunder it for a week.
The Neo-Babylonian Empire sacks Jerusalem and destroys the First Temple.