1402 Tamerlane's Mongols defeat Ottoman Turks at Angora.
1588 The Spanish Armada sets sail from Corunna.
1715 The Riot Act goes into effect in England.
1864 Confederates attacks Union forces outside Atlanta.
1867 Imperial troops in Guizhou, China, kill 20,000 Miao rebels.
1881 Sioux chief Sitting Bull surrenders to the U.S. Army.
1917 Alexander Kerensky becomes the premier of Russia.
1942 The U.S. Army Women's Army Auxiliary Corps first class at Fort Des Moines, IO.
1944 Adolf Hitler is wounded in an assassination attempt by German Army officers.
1950 U.S. Army's Task Force is pushed back by superior North Korean forces.
1951 King Abdullah of Jordan is assassinated.
1969 Neil Armstrong and Edwin "Buzz" Aldrin become the first men to walk the moon.
1976 The Viking spacecraft lands on Mars and begins taking soil samples.
Born on July 20
1304 Francisco Petrarch, Italian poet and scholar.
1591 Anne Hutchinson, religious liberal, one of the founders of Rhode Island.
1850 John Graves Shedd, president of Marshall Field and Company.
1919 Edmund Hillary, New Zealand explorer.
1933 Cormac McCarthy, novelist (All the Pretty Horses).
1939 Judy Chicago, artist.