WHAT HAPPENED ON 30. JUNE
Want to find out what all happened on 30. June

World War I: Greece declares war on the Central Powers. (30. June 1917)

U.S. President Warren G. Harding appoints former President William Howard Taft Chief Justice of the United States. (30. June 1921)

In Washington D.C., U.S. Secretary of State Charles Evans Hughes and Dominican Ambassador Francisco J. Peynado sign the Hughes-Peynado agreement, which ends the United States occupation of the Dominican Republic. (30. June 1922)

The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place. (30. June 1934)

The Senegalese Socialist Party holds its first congress. (30. June 1935)

Emperor Haile Selassie of Abyssinia appeals for aid to the League of Nations against Italy's invasion of his country. (30. June 1936)

The world's first emergency telephone number, 999, is introduced in London (30. June 1937)

World War II: The Battle of Cherbourg ends with the fall of the strategically valuable port to American forces. (30. June 1944)

The first Chevrolet Corvette rolls off the assembly line in Flint, Michigan. (30. June 1953)

A TWA Super Constellation and a United Airlines DC-7 collide above the Grand Canyon in Arizona and crash, killing all 128 on board both planes. It is the worst-ever aviation disaster at that point in time. (30. June 1956)

A United States Air Force F-100 Super Sabre from Kadena Air Base, Okinawa, crashes into a nearby elementary school, killing 11 students plus six residents from the local neighborhood. (30. June 1959)

Congo gains independence from Belgium. (30. June 1960)

Ciaculli massacre: a car bomb, intended for Mafia boss Salvatore Greco, kills seven police officers and military personnel near Palermo. (30. June 1963)

The National Organization for Women, the United States' largest feminist organization, is founded. (30. June 1966)

Pope Paul VI issues the Credo of the People of God. (30. June 1968)

Nigeria bans Red Cross aid to Biafra. (30. June 1969)

The crew of the Soviet Soyuz 11 spacecraft are killed when their air supply escapes through a faulty valve. (30. June 1971)

Ohio ratifies the 26th Amendment to the U.S. Constitution, reducing the voting age to 18, thereby putting the amendment into effect. (30. June 1971)

The first leap second is added to the UTC time system. (30. June 1972)

The Baltimore municipal strike of 1974 begins. (30. June 1974)