| Date | Event |
|---|---|
| September 01 1980 | Ontario: Fox's Marathon Of Hope Ends |
| September 01 1980 | Choi Kyu-hah Resigns. Chun Doo-hwan New President |
| September 05 1980 | World's Longest Tunnel Opens In Switzerland |
| September 11 1980 | Chilean Voters Approve New Constitution |
| September 12 1980 | Military Coup In Turkey |
| September 16 1980 | Vincent And Grenadines Grenadines |
| September 17 1980 | Trade Union Solidarity Established In Poland |
| September 17 1980 | Nicaragua Ex-President Somoza Killed In Paraguay |
| September 18 1980 | Cosmonauts Ride Soyuz38 To Salyut6 Station |
| September 22 1980 | Iraq Invades Iran |
| September 26 1980 | Oktoberfesk Attack Left 13 Dead, 211 Injured |
| September 30 1980 | Xerox And Partners Publish Ethernet Specs |