1862 – American Civil War: Battle of Glorieta Pass – in New Mexico, Union forces stop the Confederate invasion of New Mexico territory.
1910 – Henri Fabre becomes the first person to fly a seaplane, the Fabre Hydravion, after taking off from a water runway near Martigues, France.
1920 – Palm Sunday tornado outbreak of 1920 affects the Great Lakes region and Deep South states.
1930 – Constantinople and Angora change their names to Istanbul and Ankara.
1933 – The Imperial Airways biplane City of Liverpool is believed to be the first airline lost to sabotage when a passenger sets a fire on board.
1939 – Spanish Civil War: Generalissimo Francisco Franco conquers Madrid after a three-year siege.
1946 – Cold War: The United States State Department releases the Acheson–Lilienthal Report, outlining a plan for the international control of nuclear power.
1959 – The State Council of the People's Republic of China dissolves the Government of Tibet.
1970 – Gediz earthquake: A 7.2 magnitude earthquake strikes western Turkey at about 23:05 local time, killed 1,086 and injured 1,260.
1979 – A coolant leak at the Three Mile Island's Unit 2 nuclear reactor outside Harrisburg, Pennsylvania leads to the core overheating and a partial melt down.
1994 – In South Africa, Zulus and African National Congress supporters battle in central Johannesburg, resulting in 18 deaths.
2000 – Three children are killed when a Murray County, Georgia, school bus is hit by a CSX freight train.
2005 – The 2005 Sumatra earthquake rocks Indonesia, and at magnitude 8.7 is the fourth strongest earthquake since 1965.