| 104491 | September 13 | Event | 1788 – The Philadelphia Convention sets the date for the first presidential election in the United States, and New York City becomes the country's temporary capital. |
| 104492 | September 13 | Event | 1791 – King Louis XVI of France accepts the new constitution. |
| 104493 | September 13 | Event | 1808 – Finnish War: In the Battle of Jutas, Swedish forces under Lieutenant General Georg Carl von Döbeln beat the Russians, making von Döbeln a Swedish war hero. |
| 104494 | September 13 | Event | 1812 – War of 1812: A supply wagon sent to relieve Fort Harrison is ambushed in the Attack at the Narrows. |
| 104495 | September 13 | Event | 1814 – In a turning point in the War of 1812, the British fail to capture Baltimore. During the battle, Francis Scott Key composes his poem "Defence of Fort McHenry", which is later set to music and becomes the United States' national anthem. |
| 104496 | September 13 | Event | 1843 – The Greek Army rebels (OS date: September 3) against the autocratic rule of king Otto of Greece, demanding the granting of a constitution. |
| 104497 | September 13 | Event | 1847 – Mexican–American War: Six teenage military cadets known as Niños Héroes die defending Chapultepec Castle in the Battle of Chapultepec. American troops under General Winfield Scott capture Mexico City in the Mexican–American War. |
| 104498 | September 13 | Event | 1848 – Vermont railroad worker Phineas Gage survives a 3-foot 7-inch (1.1 m) iron rod being driven through his head the reported effects on his behavior and personality stimulate thinking about the nature of the brain and its functions. |
| 104499 | September 13 | Event | 1850 – First ascent of Piz Bernina, the highest summit of the eastern Alps. |
| 104500 | September 13 | Event | 1862 – American Civil War: Union soldiers find a copy of Robert E. Lee's battle plans in a field outside Frederick, Maryland. It is the prelude to the Battle of Antietam. |
| 104501 | September 13 | Event | 1882 – Anglo-Egyptian War: The Battle of Tel el-Kebir is fought. |
| 104502 | September 13 | Event | 1898 – Hannibal Goodwin patents celluloid photographic film. |
| 104503 | September 13 | Event | 1899 – Henry Bliss is the first person in the United States to be killed in an automobile accident. |
| 104504 | September 13 | Event | 1899 – Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m – 17,058 ft), the highest peak of Mount Kenya. |
| 104505 | September 13 | Event | 1900 – Filipino resistance fighters defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War. |
| 104506 | September 13 | Event | 1906 – First flight of a fixed-wing aircraft in Europe. |
| 104507 | September 13 | Event | 1914 – World War I: South African troops open hostilities in German south-west Africa (Namibia) with an assault on the Ramansdrift police station. |
| 104508 | September 13 | Event | 1914 – World War I: The Battle of Aisne begins between Germany and France. |
| 104509 | September 13 | Event | 1922 – The final act of the Greco-Turkish War, the Great Fire of Smyrna, commences. |
| 104510 | September 13 | Event | 1923 – Following a military coup in Spain, Miguel Primo de Rivera takes over, setting up a dictatorship. |
| 104511 | September 13 | Event | 1933 – Elizabeth McCombs becomes the first woman elected to the New Zealand Parliament. |
| 104512 | September 13 | Event | 1935 – Rockslide near Whirlpool Rapids Bridge ends the International Railway (New York–Ontario). |
| 104513 | September 13 | Event | 1942 – World War II: Second day of the Battle of Edson's Ridge in the Guadalcanal Campaign. U.S. Marines successfully defeated attacks by the Imperial Japanese Army with heavy losses for the Japanese forces. |
| 104514 | September 13 | Event | 1943 – The Municipal Theatre of Corfu is destroyed during an aerial bombardment by Luftwaffe. |
| 104515 | September 13 | Event | 1948 – Deputy Primer Minister of India Vallabhbhai Patel ordered the Army to move into Hyderabad to integrate it with the Indian Union. |
| 104516 | September 13 | Event | 1948 – Margaret Chase Smith is elected United States senator, and becomes the first woman to serve in both the U.S. House of Representatives and the United States Senate. |
| 104517 | September 13 | Event | 1953 – Nikita Khrushchev is appointed General Secretary of the Communist Party of the Soviet Union. |
| 104518 | September 13 | Event | 1956 – The dike around the Dutch polder East Flevoland is closed. |
| 104519 | September 13 | Event | 1956 – The IBM 305 RAMAC is introduced, the first commercial computer to use disk storage. |
| 104520 | September 13 | Event | 1964 – South Vietnamese Generals Lâm Văn Phát and Dương Văn Đức fail in a coup attempt against General Nguyễn Khánh. |