The U.S. Constitution was signed September 17, 1787. (That day is now called “Constitution Day.”)
September 2, 1945, when Japan formally surrendered to end World War 2, is called V-J (Victory over Japan) Day. (August 15, when Japan announced their surrender, is also often referred to as V-J Day.)
Fall 2019 begins September 23.
Labor Day, always the first Monday in September, became a legal holiday in 1894.
Birthdays: Salma Hayek (September 2), Yao Ming (12), Jada Pinkett Smith (18), George Gershwin (26)
Source: Famous Birthdays