Today is Monday, Sept. 26, the 270th day of 2016. There are 96 days left in the year.

On this date:

In 1777, British troops occupied Philadelphia during the American Revolution.

In 1892, John Philip Sousa and his newly formed band performed publicly for the first time at the Stillman Music Hall in Plainfield, New Jersey.

In 1914, the Federal Trade Commission was established.

In 1937, the radio drama “The Shadow,” starring Orson Welles, premiered on the Mutual Broadcasting System.

In 1957, the musical play “West Side Story” opened on Broadway.

In 1991, four men and four women began a two-year stay inside a sealed-off structure in Oracle, Arizona, called Biosphere 2. (They emerged from Biosphere on this date in 1993.)

In 1996, President Bill Clinton signed a bill ensuring two-day hospital stays for new mothers and their babies. Richard Allen Davis, the killer of 12-year-old Polly Klaas, was formally sentenced to death in San Jose, California.