Anti-Mafia Judge Paolo Borsellino is killed by a Mafia car bomb in Palermo, Italy together with five police officers.

United Airlines flight 232 crashes in Sioux City, Iowa killing 112 of the 296 passengers.

The Val di Stava dam collapses killing 268 people in Val di Stava, Italy.

The first three-dimensional reconstruction of a human head in a CT is published.

The Sandinista rebels overthrow the government of the Somoza family in Nicaragua.

Sagarmatha National Park in Nepal is created.

Vietnam War: at a rally in Saigon, South Vietnamese Prime Minister Nguyen Khanh calls for expanding the war into North Vietnam.

Joe Walker flies a North American X-15 to a record altitude of 106,010 metres (347,800 feet) on X-15 Flight 90. Exceeding an altitude of 100 km, this flight qualifies as a human spaceflight under international convention.

The Prime Minister of the shadow Burmese government, Bogyoke Aung San and 6 of his cabinet and 2 non-cabinet members are assassinated by Galon U Saw.

World War II: Battle of the Atlantic (1940)|Battle of the Atlantic

World War II: Battle of Cape Spada

World War II: Army order 112 forms the Intelligence Corps of the British Army.

Following Peace Day celebrations marking the end of World War I, ex-servicemen riot and burn down Luton Town Hall.

World War I: Battle of Fromelles

A meteorite with an estimated mass of 190 kg explodes over the town of Holbrook in Navajo County, Arizona causing approximately 16,000 pieces of debris to rain down on the town.

Doc Holliday kills for the first time after a man shoots up his New Mexico saloon.

Franco-Prussian War: France declares war on Prussia.

Taiping Rebellion: Third Battle of Nanking

American Civil War: Morgan's Raid

Women's rights: a two-day Women's Rights Convention opens in Seneca Falls, New York; there the "Bloomers" are introduced.

Brunel's steamship the SS Great Britain is launched, becoming the first ocean-going craft with an iron hull or screw propeller and also becoming the largest vessel afloat in the world.

The British Medical Association is founded as the Provincial Medical and Surgical Association by Sir Charles Hastings at a meeting in the Board Room of the Worcester Infirmary.

A formal request to found what will become Mayagüez, Puerto Rico is filed.

Representatives of the Iroquois Confederacy sign the Nanfan Treaty, ceding a large territory north of the Ohio River to England.

Salem Witch Trials: five women are hanged for witchcraft in Salem, Massachusetts.

Anglo-Spanish War (1585)|Anglo-Spanish War: Spanish Armada#Battle of Gravelines|Battle of Gravelines

Lady Jane Grey is replaced by Mary I of England as Queen of England after only nine days of reign.

The Tudor warship Mary Rose sinks off Portsmouth.

Italian War of 1542: the first Siege of Boulogne begins.

Wars of Scottish Independence: Battle of Halidon Hill

Umayyad conquest of Hispania: Battle of Guadalete