The September 11 attacks (also referred to as September 11, September 11th, or 9/11[nb 1]) were a series of four coordinated terrorist attacks launched by the Islamic terrorist group al-Qaeda upon the United States in New York City and the Washington, D.C.…

September 11 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. It is usually the first day of the year in the Coptic…