Events in History
- Sep 10 Switzerland, traditionally a neutral country, joins the United Nations
- Sep 11 Through extreme and coordinated effort, The Pentagon is rededicated after repairs are completed, exactly one year after the attack on the building.
- Sep 17 27th Toronto International Film Festival: "Whale Rider" directed by Niki Caro wins the People's Choice Award
- Sep 20 The Kolka-Karmadon rock and ice slide starts
- Sep 23 The first public version of the web browser Mozilla Firefox ("Phoenix 0.1") is released
- Sep 25 The Vitim event, a possible bolide impact in Siberia, Russia.
- Sep 26 Overcrowded Senegalese ferry MV Joola capsizes off the coast of Gambia killing more than 1,000
- Sep 27 Timor-Leste (East Timor) joins the United Nations.
Deaths in History
- Sep 2 Dick Reynolds, Australian rules footballer and coach (b. 1915)
- Sep 3 W. Clement Stone, American entrepreneur (b. 1902)
- Sep 5 David Todd Wilkinson, American astronomer, author of the first study of the Cosmic microwave background radiation (b. 1935)
- Sep 7 Uziel Gal, Israeli firearm designer (b. 1923)
- Sep 9 Geoffrey Dummer, British electronics engineer, built first integrated circuit and work in radar, dies at 93
- Sep 19 Robert Guéï, ruler of Côte d'Ivoire (b. 1941)
- Sep 21 Robert L. Forward, American physicist and writer (b. 1932)
- Sep 22 Jan de Hartog, Dutch-born writer (b. 1914)
- Sep 23 Lord Abinger [James Richard Scarlett], English Conservative peer, campaigned for reform of the ancient law on treasure trove, dies at 87
- Sep 24 Youssouf Togoïmi, Chadian rebel (b. 1953)
- Sep 24 Mike Webster, National Football League player (b. 1952)
- Sep 28 Patsy Mink, U.S. Congresswoman (b. 1927)
- Sep 29 Edmund Trebus, probably best known for his appearance on A Life of Grime (b. 1918)
- Sep 30 Hans-Peter Tschudi, Swiss Federal Councilor (b. 1913)