September 21, 1985, was a Saturday.
24th Sept 1985 was a Tuesday.
Sept 6th 1985 was a Friday.
Monday
September 21, 1945 was a Friday.
Thursday
It was a Friday.
September 21st, 1983 fell on a Wednesday.
21st Sept 1990 was a Friday.
November 21st, 1985 fell on a Thursday.
This depends on the year. July 21st has occurred on every day of the week.
Sept. 26 1997 was a Friday.
Sept 10 1983 was a Saturday.