Thursday
21 September 1971 was a Tuesday.
August 21 1971 was a Saturday.
May 21, 1971 fell on a Friday.
April 21, 1971 fell on a Wednesday.
Tuesday.
21 October 1950 was a Saturday.
21 October 1990 was a Sunday.
October 21, 1945 was a Sunday.
October 21 1861 was on a Monday.
October 21 1992 was a Wednesday
October 21, 1999 was a Thursday.
October 21 2010 was a Thursday.