WHAT HAPPENED ON 20. AUGUST
Want to find out what all happened on 20. August

Japan's public broadcasting company, Nippon Hōsō Kyōkai (NHK) is established. (20. August 1926)

Lou Gehrig hits his 23rd career grand slam – a record that stood for 75 years until it was broken by Alex Rodriguez. (20. August 1938)

In Mexico City, Mexico exiled Russian revolutionary Leon Trotsky is fatally wounded with an ice axe by Ramón Mercader. He dies the next day. (20. August 1940)

British Prime Minister Winston Churchill makes the fourth of his famous wartime speeches, containing the line "Never was so much owed by so many to so few". (20. August 1940)

World War II: 168 captured allied airmen, including Phil Lamason, accused by the Gestapo of being "terror fliers", arrive at Buchenwald concentration camp. (20. August 1944)

World War II: the Battle of Romania begins with a major Soviet Union offensive. (20. August 1944)

Korean War: United Nations repel an offensive by North Korean divisions attempting to cross the Naktong River and assault the city of Taegu. (20. August 1950)

In Morocco, a force of Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 French nationals. (20. August 1955)

Senegal breaks from the Mali Federation, declaring its independence. (20. August 1960)

The NS Savannah, the world's first nuclear-powered civilian ship, embarks on its maiden voyage. (20. August 1962)

Soviet Union-dominated Warsaw Pact troops invade Czechoslovakia, crushing the Prague Spring. (20. August 1968)

Viking Program: NASA launches the Viking 1 planetary probe toward Mars. (20. August 1975)

Voyager Program: NASA launches the Voyager 2 spacecraft. (20. August 1977)

In Edmond, Oklahoma, U.S. Postal employee Patrick Sherrill guns down 14 of his co-workers and then commits suicide. (20. August 1986)

"Black Saturday" of the Yellowstone fire in Yellowstone National Park (20. August 1988)

Peru becomes a member of the Berne Convention copyright treaty. (20. August 1988)

Iran–Iraq War: a ceasefire is agreed after almost eight years of war. (20. August 1988)

The Troubles: Eight British Army soldiers are killed and 28 wounded when their bus is hit by a Provisional Irish Republican Army roadside bomb in Northern Ireland, United Kingdom (see Ballygawley bus bombing). (20. August 1988)

The pleasure boat Marchioness sinks on the River Thames following a collision. 51 people are killed. (20. August 1989)

The O-Bahn Busway in Adelaide, the world's longest guided busway, opens. (20. August 1989)