August 20th

2009
The only man convicted of the bombing of Pan Am Flight 103 returned home to Libya after his release from a Scottish prison on compassionate grounds.
Pan Am Flight 103
2006
Former Associated Press photographer Joe Rosenthal, who took the iconic Iwo Jima flag-raising picture during World War II, died at age 94.
Joe Rosenthal
2000
Tiger Woods won the PGA Championship becoming the first player since Ben Hogan in 1953 to win three majors in one year.
Ben Hogan
1998
Retaliating for deadly embassy bombings in East Africa, the United States launched cruise missile strikes against al-Qaida training camps in Afghanistan and what was described as a chemical plant in Sudan.
Operation Infinite Reach
1993
Oslo accords negotiations conclude. he negotiations for the Oslo Accords were concluded at the Fafo Institute in Oslo. The agreement was between Israel and the Palestine Liberation Organization. The accords, that were eventually signed in Washington D.C. set up the Palestinian Authority and gave it governing powers over the Gaza Strip and the West Bank.
Oslo Accords
1992
The Republican National Convention in Houston nominated President George H.W. Bush and Vice President Dan Quayle for a second term.
1992 Republican National Convention
1988
The Iran-Iraq War comes to an end after 7 years. The deadly conventional war between the two Middle Eastern countries began when Iraq invaded Iran on September 22, 1980.
Iran–Iraq War
1980
Italian Reinhold Messner made the first successful solo ascent of Mount Everest and without oxygen.
Reinhold Messner
1977
The United States launched Voyager 2, an unmanned spacecraft carrying a 12-inch copper phonograph record containing greetings in dozens of languages, samples of music and sounds of nature.
1975
Viking 1 is launched by NASA using a Titan launch vehicle. It became the first space probe to successfully land on Mars.
Viking 1
1968
During the night 200,00 Warsaw Pact Soviet led troops begin to invade Czechoslovakia in response to the Prague Spring.
Hungarian Revolution of 1956
1964
As part of his Great Society policies, Lyndon B. Johnson signed the Economic Opportunity Act which, among other things, established the Head Start program.
Job Corps
1960
Senegal withdraws from the Mali Federation. Senegal withdrew from the Mali Federation, a year after its establishment. Léopold Senghor became the first president of Senegal a month later.
Mali Federation
1955
Hundreds of people were killed in anti-French rioting in Morocco and Algeria.
Sétif and Guelma massacre
1953
The Soviet Union publicly acknowledged it had tested a hydrogen bomb.
Soviet atomic bomb project
1940
Leon Trotsky is attacked in Mexico. Russian revolutionary and founder of the Red Army, Leon Trotsky was attacked in his home by an undercover agent of the Peoples Commissariat for Internal Affairs or N.K.V.D. He died a day later due to the injuries sustained during the attack.
Leon Trotsky
1918
Britain opened an offensive on the Western front during World War I.
Western Front (World War I)
1914
German forces occupied Brussels, Belgium, during World War I.
German occupation of Belgium during World War I
1882
Tchaikovsky's '1812 Overture' opens in Moscow.
1812 Overture
1866
President Andrew Johnson formally declares US Civil War over.
Conclusion of the American Civil War
1833
Benjamin Harrison, the 23rd president of the United States, was born in North Bend, Ohio.
Benjamin Harrison
1741
Alaska first sighted by Danish explorer Vitus Bering at head of Russian expedition.
Vitus Bering
1619
1st known African Americans in English North America (approx. 20) land at Point Comfort (Fort Monroe), Virginia then sold or traded into servitude.
Virginia
1597
1st Dutch East India Company ships return from the Far East.
First Dutch Expedition to Indonesia