Tuesday.
Saturday
It was a Thursday.
Monday
It was a Wednesday.
Wednesday.
4 April 1964 was a Saturday.
January 4, 1964 was a Saturday.
September 4, 1964 was a Friday.
December 4, 1964 was on a Friday.
October 4 1964 was a Sunday.
That was a Monday on the Julian calendar.
4 August 1964 was a Tuesday.