Monday
March 20 1964 was a Friday.
June 20, 1964 was a Saturday.
August 20 1964 was a Thursday.
November 20, 1964 was on a Friday.
September 20, 1964 fell on a Sunday.
January 20, 1964 fell on a Monday.
it was a Thursday
20 July 1974 was a Saturday.
20, July, 1986, was a Sunday.
July 20 1973 was a Friday.
20 July 1997 was a Sunday.
July 20 2010 was a Tuesday.