September 11th is the 254th day of the year (255th in leap years) in the Gregorian calendar. There are 111 days remaining until the end of the year.
Between the years AD 1900 and 2099, September 11 of the Gregorian calendar is the leap day of the Coptic and Ethiopian calendars. These leap days occur in the years immediately before those which are leap years in the Julian and Gregorian calendars. In all common years of the Coptic and Ethiopian calendars, September 11 is New Year’s Day.
1758 – Seven Years’ War: France repelled an invasion attempt by the British in the Battle of Saint Cast.
1893 – On the opening day of the first Parliament of the World’s Religions in Chicago, Swami Vivekananda introduced Hinduism to the United States.
1914 – During the First World War, the Australian Naval and Military Expeditionary Force invaded German New Guinea, winning the Battle of Bita Paka.
1978 – Janet Parker, a British medical photographer, became the last recorded person to die from smallpox, leading to a debate on whether the virus should be preserved.
2001 – Al-Qaeda used four hijacked passenger airliners to carry out a series of suicide attacks against targets in New York City and the Washington, D.C., area.
Paul Heyman turns 53
Harry Connick Jr. turns 51
Taraji P. Henson turns 48
Ludacris turns 41