October 20th

2011
Muammar Gaddafi is Captured. The deposed leader of Libya, Muammar Gaddafi, is captured by the National Transitional Council Forces. He was killed by the troops soon after.
Death of Muammar Gaddafi
1982
Luzhniki Disaster. A stampede during a UEFA Cup soccer (football) match between Dutch club Haarlem and the Moscovian football club, Spartak at the Lenin Stadium in Moscow left about 60 people dead.
Luzhniki disaster
1973
During the Watergate scandal, Attorney General Elliot L. Richardson and Deputy Attorney General William B. Ruckelshaus resigned and special prosecutor Archibald Cox was dismissed by President Nixon in what came to be known as the "Saturday Night Massacre.".
Elliot Richardson
1968
Jacqueline Kennedy marries Aristotle Onassis. Former American first lady, Jacqueline Kennedy, married Greek shipping magnet, Aristotle Onassis
Jacqueline Kennedy Onassis
1964
The 31st president of the United States, Herbert Hoover, died in New York at age 90.
Herbert Hoover
1962
War Breaks Out Between India and China. The month-long border dispute began after the Chinese launched a two-pronged attack on the border between the two countries. During the duration of hostilities, China and India did not officially declare war on each other nor cut off any diplomatic ties. The conflict ended with China taking control of Aksai Chin and both countries accepting a de facto border along what is now known as Line of Control.
Sino-Indian War
1947
The U.S. House Un-American Activities Committee opened meetings about alleged Communist infiltration in the Hollywood film industry.
House Un-American Activities Committee
1944
Gen. Douglas MacArthur returned to the Philippines, 30 months after he said 'I shall return.'.
Douglas MacArthur
1935
Communist forces end their Long March at Yan'an, in Shaanxi, China, bringing Mao Zedong to prominence.
Long March
1864
US President Lincoln formally establishes Thanksgiving as a national holiday.
Presidency of Abraham Lincoln
1803
The Senate ratified the Louisiana Purchase.
Louisiana Purchase
1603
Chinese uprising in Philippines fails after 23,000 killed.
Sangley Rebellion
1097
1st Crusaders arrive in Antioch during the First Crusade.
Siege of Antioch