Year 1122 » Pope Callixtus II and Holy Roman Emperor Henry V, Holy Roman Emperor called Henry V agree to the Concordat of Worms to put an end to the Investiture Controversy.
Year 1409 » Battle of Kherlen, the second significant victory over Ming China by the Mongols since 1368.
Year 1459 » Battle of Blore Heath, the first major battle of the English Wars of the Roses, is fought at Blore Heath in Staffordshire.
Year 1568 » Spanish Empire Spanish naval forces rout an Kingdom of England English fleet, under the command of John Hawkins (naval commander) John Hawkins, at the Battle of San Juan de Ulúa (1568) Battle of San Juan de Ulúa near Veracruz.
Year 1642 » First commencement exercises occur at Harvard College.
Year 1779 » American Revolution: John Paul Jones on board the USS Bonhomme Richard 1765 6 wins the Battle of Flamborough Head.
Year 1803 » Second Anglo-Maratha War: Battle of Assaye between the British East India Company and the Maratha Empire in India.
Year 1806 » Lewis and Clark Expedition e.g Lewis and Clark return to St. Louis, Missouri known as St. Louis after exploring the Pacific Northwest of the United States.
Year 1821 » Siege of Tripolitsa e.g Tripolitsa, Greece, is captured by Greek rebels during the Greek War of Independence.
Year 1845 » The New York Knickerbockers known as Knickerbockers Baseball Club, the first baseball team to play under the modern rules, is founded in New York.
Year 1846 » Astronomers Urbain Le Verrier known as Urbain Jean Joseph Le Verrier, John Couch Adams and Johann Gottfried Galle collaborate on the discovery of Neptune.
Year 1868 » Grito de Lares ("Lares Revolt") occurs in Puerto Rico against Spanish rule.
Year 1889 » 'Nintendo' Koppai (Later 'Nintendo' Company, Limited) is founded by Fusajiro Yamauchi to produce and market the playing card game Hanafuda.
Year 1899 » American Asiatic Squadron destroys a Filipino battery at the 'Battle of Olongapo'.
Year 1905 » Norway and Sweden sign the "Karlstad treaty", peacefully Dissolution of the union between Norway and Sweden in 1905 known as dissolving the Union between Sweden and Norway known as Union between the two countries.
Year 1908 » University of Alberta in Alberta, Canada, is founded.
Year 1911 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
Year 1913 » Roland Garros (aviator) or Roland Garros of France becomes the first to fly in an airplane across the Mediterranean (from St. Raphael France to Bizerte, Tunisia).
Year 1932 » The Kingdom of Hejaz and Nejd is renamed the Kingdom of Saudi Arabia.
Year 1936 » First ascent of Siniolchu by a German team.
Year 1938 » Mobilization of the Czechoslovakia named Czechoslovak army in response to the Munich Agreement e.g Munich Crisis.
Year 1942 » World War II: The Actions along the Matanikau (September – October 1942) called Matanikau action on Guadalcanal begins U.S. Marines attack Japanese units along the Matanikau River.
Year 1943 » World War II: The Nazi Germany named Nazi puppet state the Italian Social Republic is founded.
Year 1950 » Korean War: The Battle of Hill 282 the first US friendly-fire incident on British military personnel since World War II occurred.
Year 1952 » Richard Nixon makes his "Checkers speech".
Year 1959 » Iowa farmer and corn breeder Roswell Garst hosts Soviet premier Nikita Khrushchev.
Year 1962 » The Lincoln Center for the Performing Arts opens in New York City.
Year 1969 » The Chicago Seven known as Chicago Eight trial opens in Chicago.
Year 1973 » Juan Perón returns to power in Argentina.
Year 1983 » Gulf Air Flight 771 is bombed, killing all 117 people on board.
Year 1983 » Gerrie Coetzee of South Africa becomes the first African boxing world heavyweight champion.
Year 1983 » Saint Kitts and Nevis joins the United Nations.
Year 1986 » Jim Deshaies of the Houston Astros sets the major-league record by striking out the first eight batters of the game against the Los Angeles Dodgers. This record was tied by Jacob deGrom of the New York Mets on September 15, 2014 against the Miami Marlins
Year 1988 » José Canseco of the Oakland Athletics becomes the first member of the 40–40 club.
Year 1992 » A large Provisional Irish Republican Army bomb destroys forensic laboratories in Belfast.
Year 1999 » Celebrate Bisexuality Day was first observed in the United States.
Year 1999 » NASA announces that it has lost contact with the Mars Climate Orbiter.
Year 2002 » The first public version of the web browser Mozilla Firefox ("Phoenix 0.1") is released.
Year 2004 » Hurricane Jeanne: At least 1,070 in Haiti are reported to have been killed by floods.
Year 2008 » Kauhajoki school shooting: Matti Saari kills 10 people before committing suicide.