It was a Sunday.
June 21 1983 was a Tuesday.
21 January 1983 was a Friday.
21 January 1983 was a Friday.
April 21, 1983 fell on a Thursday.
October 21, 1983 fell on a Friday.
May 21, 1983 fell on a Saturday.
21 August 1975 was a Thursday.
August 21 1996 was a Wednesday.
21 August 1933 was a Monday.
August 21, 1950 was a Monday.
August 21, 1978 was a Monday.
21 August 1945 was a Tuesday.