Even way back in 1964, they used the same seven days of the week that we do nowadays!
November 9, 1964 was a Monday.
May 5, 1964 was a Tuesday.
January 7, 1964 was a Tuesday.
December 28, 1964 was a Monday.
September 28, 1964 was a Monday.
13 October 1964 was a Tuesday.
9 April 1964 was a Thursday.
4 April 1964 was a Saturday.
14 December 1964 was a Monday.
17 April 1964 was a Friday.
2nd November 1964 was Monday.
October 30, 1964, was a Friday