Monday
21 June 1955 was a Tuesday.
January 21, 1955 fell on a Friday.
May 21, 1955 fell on a Saturday.
October 21, 1955 fell on a Friday.
January 21, 1955 fell on a Friday.
March 21, 1955 fell on a Monday.
Friday
January 21 1955 was on a Friday.
July 21st, 1955 was a Thursday.
21 November 1958 was a Friday.
21 November 1980 was a Friday.
21 November 1957 was a Thursday.