Wikipedia:Selected anniversaries/September 9

This is a list of selected September 9 anniversaries that appear in 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 will soon 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 four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.

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.

← September 8	September 10 →

Staging area

Images

Use only ONE image at a time

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  Flag of Tajikistan
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  Flag of North Korea
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  California state flag
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  Bust of Constantius II
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  James IV of Scotland
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  Dubai Metro train
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Ineligible

Blurb	Reason
Day of the Foundation of the Republic in North Korea (1948);	unreferenced sections
National Grandparents Day (2012) in the United States	refimprove
AD 9 – Germanic Wars: An alliance of Germanic tribes led by Arminius engaged Roman forces led by Publius Quinctilius Varus at the Battle of the Teutoburg Forest, defeating three of the legions within the next few days.	refimprove sections
1488 – Anne became Duchess of Brittany, a central figure in the struggle for influence that led to the union of Brittany and France.	unreferenced section
1513 – War of the League of Cambrai: James IV of Scotland was killed at the Battle of Flodden in Northumberland while leading an invasion of England.	James: unreferenced section (Ancestry); Battle: refimprove section
1839 – John Herschel took the first photograph on glass.	refimprove section
1850 – As per the conditions of the Compromise of 1850, California was admitted into the United States as a free state, despite the fact that Southern California was south of the parallel 36°30' north.	refimprove section
1944 – With the help of the advancing forces of the Soviet Red Army, the Bulgarian government of Konstantin Muraviev was overthrown and replaced with a government of the Fatherland Front.	refimprove
1965 – Hurricane Betsy made its second landfall near New Orleans, Louisiana, U.S., leaving 76 dead and becoming the first hurricane to cause over $1 billion (unadjusted) in damage.	refimprove section
1968 – The remainder of the area donated to the Great Swamp National Wildlife Refuge in Morris County, New Jersey, was dedicated and it became the United States' first refuge to receive wilderness designation.	refimprove
1969 – The Official Languages Act of Canada came into force, giving both French and English equal status throughout the Canadian national government.	refimprove section
1971 – Inmates seized control of the Attica Correctional Facility in Attica, New York, US, taking 33 guards hostage, before police were able to retake the prison four days later.	irrelevant material
1990 – Sri Lankan Civil War: The Sri Lankan Army massacred at least 184 Tamil refugees in the Batticaloa District.	needs more footnotes
2004 – A car bomb exploded outside the Australian embassy in Jakarta, Indonesia, killing at least nine people and injuring over 150 others.	globalize
2009 – The Dubai Metro, the first urban train network in the Arabian Peninsula and the world's longest fully automated metro network, was ceremonially inaugurated at 9:09:09 PM.	outdated

Eligible

• 337 – After disposing of all relatives who possibly held a claim to the throne, Constantine II, Constantius II, and Constans became Roman co-emperors.
• 1141 – Yelü Dashi, the Liao dynasty general who founded the Qara-Khitai, defeated the Seljuq and Kara-Khanid forces at the Battle of Qatwan near Samarkand, present-day Uzbekistan.
• 1739 – The Stono Rebellion, at the time the largest slave rebellion in the Thirteen Colonies of British America, erupted near Charleston, South Carolina.
• 1791 – The commissioners overseeing the construction of the United States' new capital city named it in honor of the first president: Washington, D.C.
• 1939 – World War II: About 3,000 Polish Army forces began a nearly month-long defence of the Hel Peninsula during the German invasion of Poland.
• 1954 – The 6.7 M_w Chlef earthquake struck Algeria, leaving at least 1,243 people dead and 5,000 injured, and forced the government to implement comprehensive reforms in building codes.
• 1971 – John Lennon's solo album Imagine was released.
• 2010 – A natural gas pipeline exploded in San Bruno, California, U.S., creating a "wall of fire more than 1,000 feet (300 m) high".
• Born/died this day: Thomas Hutchinson (b. 1711) · Joseph Leidy (b. 1823) · Augustin Pyramus de Candolle (d. 1841) · Louise Lehzen (d. 1870) · Colonel Sanders (b. 1890) · Michelle Williams (b. 1980) · Neil Davis (d. 1985)

Notes

• Residence Act appears on July 16, so Washington DC should not appear in the same year
• Invasion of Poland appears on September 1, so Battle of Hel should not appear in the same year
• 1936 – Opposed to António de Oliveira Salazar's support of the Nationalists in the Spanish Civil War, the crews of the Portuguese Navy ships NRP Afonso de Albuquerque and NRP Dão mutinied while anchored in the harbour of Lisbon. ****The 1936 Naval Revolt article says Sept. 8th, not the 9th.****

September 9: Day of Tasu'a (Shia Islam, 2019); Independence Day in Tajikistan (1991)

Amalthea

• 1320 – Byzantine–Latin Wars: Byzantine forces defeated Achaean troops in the Battle of Saint George, taking control of the Arcadia region of Greece.
• 1493 – Ottoman wars in Europe: At the Battle of Krbava Field, a large Croatian army intercepted an Ottoman force returning to the Sanjak of Bosnia, but was defeated.
• 1892 – At the Lick Observatory, California, Edward Emerson Barnard discovered Amalthea (pictured), a moon of Jupiter and the last natural satellite discovered by visual observation.
• 1969 – Allegheny Airlines Flight 853 collided in mid-air with a Piper PA-28 Cherokee flown by a student pilot near Fairland, Indiana, destroying both aeroplanes and killing all 83 occupants of both aircraft.
• 2001 – Ahmad Shah Massoud, leader of the Northern Alliance, was assassinated in Afghanistan.

Frank Chance (b. 1877) · Chaim Topol (b. 1935) · Edward Teller (d. 2003)

More anniversaries:

• September 8
• September 9
• September 10