Wikipedia:Selected anniversaries/August 9

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This is a list of selected August 9 anniversaries that appears on the "On this day" section of the Main Page. To suggest a new item, in most cases you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial, or on a day that is or soon will be on the Main Page, please post your suggestion on the talk page instead.

Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only five to six events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is not generally posted this year if it is also the subject of the scheduled August 9, 2019 featured article or the August 9, 2019 featured picture.

To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.

< August 8 August 10 >

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Blurb Reason
National Day in Singapore (1965); refimprove
48 BCJulius Caesar and the Populares defeated Pompey and the Optimates at the Battle of Pharsalus, solidifying his control over the Roman Republic. needs more footnotes, unreferenced sections
378 – A large Roman army led by Emperor Valens was destroyed by the Goths in the Battle of Adrianople. unreferenced section
1173 – Construction began on a campanile, which would eventually become the Leaning Tower of Pisa. lots of CN tags
1842 – The Webster–Ashburton Treaty was signed, clarifying the Canada–United States border between Lake Superior and the Lake of the Woods, and the location of the MaineNew Brunswick border. refimprove section
1483 – The first mass in the Sistine Chapel in the Vatican City was celebrated. refimprove
1854Henry David Thoreau published Walden, his account of having spent two years living mostly in isolation on the shores of Walden Pond near Concord, Massachusetts, U.S. refimprove section
1862American Civil War: After nearly being driven from the field in the early part of the Battle of Cedar Mountain, Confederate troops counterattacked and achieved a victory. Section needs expansion
1965 – Malaysia expelled the state of Singapore (flag pictured) from its federation due to heated ideological conflict between their respective ruling parties. History: refimprove; Singapore: expansion
1969 – Followers of cult leader Charles Manson murdered pregnant actress Sharon Tate and four others in her home in Benedict Canyon, Los Angeles, California. references missing page numbers



August 9: International Day of the World's Indigenous Peoples; National Women's Day in South Africa

Mushroom cloud over Nagasaki
Mushroom cloud over Nagasaki

Michael the Brave (d. 1601) · Eileen Gray (b. 1878) · Philip Larkin (b. 1922)

More anniversaries: