Tuesday
March 21, 1978 was a Tuesday.
The day of the week for September 21, 1978 was a Thursday.
August 21, 1978 was a Monday.
April 21 1978 was a Wednesday.
October 21, 1978 fell on a Saturday.
September 21, 1978 fell on a Thursday.
21 March 1960 was a Monday.
21 March 1950 was a Tuesday.
21 March 1959 was a Saturday.
March 21 1946 was a Thursday.
March 21 2005 was a Monday.
March 21 2010 was a Sunday.