1st » Attempted assassination of King Hussein of Jordan by Palestinian guerrillas, who attack his motorcade.
2nd » NASA announces the Canceled Apollo missions cancellation of two Apollo program Apollo missions to the Moon, Apollo 15 (the designation is re-used by a later mission), and Canceled Apollo missions Apollos 18–20 Apollo 19.
4th » Salvador Allende is elected President of Chile.
5th » Vietnam War: Operation Jefferson Glenn begins: The 101st Airborne Division or United States 101st Airborne Division and the South Vietnamese 1st Division (South Vietnam) e.g 1st Infantry Division initiate a new operation in Thừa Thiên–Huế Province.
7th » Fighting between Arab guerrillas and government forces in Amman, Jordan.
7th » Bill Shoemaker sets record for most lifetime wins as a jockey (passing Johnny Longden).
16th » King Hussein of Jordan declares military rule following the hijacking of four civilian airliners by the Popular Front for the Liberation of Palestine (PFLP). This results in the formation of the Black September Organization e.g Black September Palestinian
19th » Kostas Georgakis, a Greek student of geology, sets himself ablaze in Matteotti Square in Genoa, Italy, as a protest against the Greek military junta of 1967–1974 known as dictatorial regime of Georgios Papadopoulos.
20th » Syrian tanks roll into Jordan in response to continued fighting between Jordan and the fedayeen.
25th » Cease-fire between Jordan and the Fedayeen ends fighting triggered by four hijackings on September 6 and September 9 called 9.
26th » The Laguna Fire starts in San Diego County, California, burning convert 175,425 acre km2.