July 20th

2012
Aurora shooting. A gunman, James Holmes, opened fire in a movie theater during the premier of the Dark Night Rises in Aurora, Colorado, killing 12 people and injuring 58 others.
2012 Aurora shooting
2007
The Senate Judiciary Committee voted almost totally along party lines, 13-6, to approve Elena Kagan to be the Supreme Court's fourth female justice.
Sonia Sotomayor
1999
After 38 years at the bottom of the Atlantic, astronaut Gus Grissom's Liberty Bell 7 Mercury capsule was recovered.
Mercury-Redstone 4
1993
White House deputy counsel Vince Foster was found shot to death in a park near Washington, D.C., in an apparent suicide.
Vince Foster
1990
A federal appeals court set aside Oliver North's Iran-Contra convictions.
Iran–Contra affair
1985
Treasure hunters found the Spanish galleon Nuestra Senora de Atocha, which sank off the coast of Key West, Fla., in 1622 during a hurricane. The ship contained over $400 million in coins and silver ingots.
Mel Fisher
1977
A flash flood hit Johnstown, Pa., killing 80 people and causing $350 million in damage.
Portal:Pittsburgh/On this day
1976
Viking I lands on Mars. Part of the Viking program, Viking I became the first American spacecraft to succesfully land on MArs and to complete its mission.
Viking 1
1974
Turkish invasion of Cyprus. Also known as Cyprus Peace Operation or Operation Attila, the invasion was a response to a coup in Cyprus.
Turkish invasion of Cyprus
1969
Football War ends. A ceasefire came into effect between Honduras and El Salvador after the two countries fought a brief war over immigration El Salvador to Honduras. The hostilities occurred during North American trials of the FIFA World Cup.
Football War
1960
Sirima Bandaranaike of Sri Lanka (then Ceylon) became the world's first woman prime minister.
Sirimavo Bandaranaike
1954
Armistice for Indo-China signed, Vietnam separates into North & South.
Geneva Conference (1954)
1951
King Abdullah I of Jordan was assassinated.
Abdullah I of Jordan
1944
Adolf Hitler was only slightly wounded when a bomb planted by would-be assassins exploded at the German leader's Rastenburg headquarters.
20 July plot
1921
Congresswoman Alice Mary Robertson becomes the first woman to preside over the US House of Representatives.
Alice Mary Robertson
1917
The World War I draft lottery began.
Conscription in the United States
1881
Fugitive Sioux Indian leader Sitting Bull surrendered to federal troops.
Portal:United States/Anniversaries/July/July 20
1871
British Columbia joined the confederation as a Canadian province.
History of British Columbia
1861
The Congress of the Confederate States began holding sessions in Richmond, Va.
Congress of the Confederate States
1810
Colombia declared independence from Spain.
Colombian Declaration of Independence