It was a Sunday.
21st March 1956 was a Wednesday.
March 21st, 2012 fell on a Wednesday.
June 21, 1971 fell on a Monday.
Friday
It was a Saturday.
March 11th 1971 was on a Thursday.
March 15 1971 was a Monday.
March 8 1971 was a Monday.
March 18 1971 was a Thursday.
March 21st 1993 was a Sunday.
21st March 1981, was a Saturday.
March 21st 1999 was a Sunday.