- August 6, 0258 St Sixtus II ends his reign as Catholic Pope

- August 6, 0523 St Hormisdas ends his reign as Catholic Pope
- August 6, 1181 Supernova observed by Chinese & Japanese astronomers
- August 6, 1538 “Bogot, Colombia, is founded by Gonzalo Jimnez de Quesada.”
- August 6, 1787 Constitutional Convention in Phila begans debate
- August 6, 1787 Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention.
- August 6, 1806 “Francis II, the last Holy Roman Emperor, abdicates, thus ending the Holy Roman Empire.”
- August 6, 1806 Holy Roman Empire ends
- August 6, 1815 “US flotilla ends piracy by Algiers, Tunis & Tripoli”
- August 6, 1819 Norwich University founded in Vermont as the first private military school in the United States.
- August 6, 1825 Bolivia gains independence from Peru
- August 6, 1845 Russian Geographical Society is founded in Saint Petersburg.
- August 6, 1854 Congress passes Confiscation Act
- August 6, 1855 “Election riots known as “”Bloody Monday”” in Louisville, KY”
- August 6, 1861 “British annexation of Lagos, Nigeria.”
- August 6, 1862 “CSA ironclad “”Arkansas”” is badly damaged in Union attack”
- August 6, 1864 “Rebels evacuate Ft Powell, Mobile Bayd”
- August 6, 1870 “Franco-Prussian War: Battle of Wrth is fought, resulting in a decisive Prussian victory.”
- August 6, 1870 White conservatives suppresed black vote & captured Tenn legislature
- August 6, 1889 “London’s Savoy Hotel opens, the first British hotel to have private baths”
- August 6, 1890 “At Auburn Prison in New York, murderer William Kemmler becomes the first person to be executed by electric chair.”
- August 6, 1890 Cy Young pitches & wins 1st game
- August 6, 1890 “First use of electric chair in US, John Hart, in NY for murder”
- August 6, 1901 “Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.”
- August 6, 1909 Alice Ramsey and three friends become the first women to complete a transcontinental auto trip.
- August 6, 1911 “Lucille Ball, comedienne and actress born August 6, 1911 in Jamestown, NY, U.S.A. She died April 26, 1989 from a ruptured aorta during surgery.”
- August 6, 1912 The Bull Moose Party meets at the Chicago Coliseum.
- August 6, 1914 Austria-Hungary declares war against Russia
- August 6, 1914 “Denis Patrick Dowd Jr. enlists in the French Foreign Legion, becoming the first American to fight in World War I.”
- August 6, 1914 “Ellen Wilson Pres Wilson’s wife, dies at 54”
- August 6, 1914 Serbia declares war against Germany
- August 6, 1914 “World War I: First Battle of the Atlantic – Two days after the United Kingdom declared war on Germany over the German invasion of Belgium, ten German U-boats leave their base in Heligoland to attack Royal Navy warships in the North Sea.”
- August 6, 1914 World War I: Serbia declares war on Germany; Austria declares war on Russia.
- August 6, 1915 “Battle of Lone Pine, Gallipoli starts ? Seven Australians receive Victoria Crosses”
- August 6, 1919 The first air flight over a major body of water in Australia (Harry Butler)
- August 6, 1921 “Clason Point, Bronx to College Point, Queens muni ferry system begins”
- August 6, 1923 Henry Sullivan swims the English Channel.
- August 6, 1926 Gertrude Ederle becomes first woman to swim across the English Channel.