This is a list of selected September 11 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 articleorpicture 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.
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| Blurb | Reason |
|---|---|
| Teachers' Day in parts of Latin America; | refimprove section |
| ; Patriot Day in the United States | refimprove section |
| {{<!--If next year is a leap year-->#ifexpr:{{IsLeapYear| {{CURRENTYEAR}} +1}}|<!--Don't show-->|New Year's Day in the Coptic and the Ethiopian calendars;}} | Coptic: refimprove: Ethiopian: refimprove |
| 1297 – First War of Scottish Independence: The Scots under Andrew Moray and William Wallace defeated English troops at the Battle of Stirling Bridge on the River Forth near Stirling. | refimprove |
| 1697 – Great Turkish War: Forces led by Prince Eugene of Savoy decisively defeated the Ottoman troops near Senta, present-day Serbia, ending the Turkish threat to Europe. | Refimprove sections |
| 1709 – An allied British-Dutch-Austrian force defeated the French at the Battle of Malplaquet, one of the bloodiest battles of the War of the Spanish Succession. | unreferenced section |
| 1714 – Siege of Barcelona: Barcelona, capital city of Catalonia, surrenders to Spanish and French Bourbon armies in the War of the Spanish Succession. | refimprove |
| 1814 – The Battle of Plattsburgh ended Britain's final invasion of the northern states during the War of 1812. | refimprove section |
| 1945 – The Japanese-run camp at Batu Lintang, Sarawak, in Borneo was liberated by the Australian 9th Division, averting the planned massacre of its 2,000-plus Allied POWs and civilian internees by four days. | unreferenced section |
| 1955 – The Bern Switzerland Temple, the first temple of the Church of Jesus Christ of Latter-day Saints in Europe, was dedicated. | refimprove; short |
| 1961 – The World Wide Fund for Nature, the world's largest independent conservation organisation, was founded in Morges, Switzerland. | primary sources |
| 1973 – A coup d'état in Chile led by General Augusto Pinochet overthrew the government of President Salvador Allende and established a junta. | refimprove section |
| 2003 – Swedish minister of Foreign Affairs Anna Lindh was assassinated in a knife attack in the NK department store in Stockholm by Mijailo Mijailović. | refimprove |
| 2012 – Garment factories in the Pakistani cities of Karachi and Lahore caught fire, leaving 315 dead. | refimprove section |
September 11: National Day of Catalonia
Stephen Hagiochristophorites (d. 1185) · Mary Watson Whitney (b. 1847) · Murali Kartik (b. 1976)
