1964 was a leap year which started on a Wednesday, so Dec 10th was a Thursday.
14 December 1964 was a Monday.
December 4, 1964 was on a Friday.
December 19 1964 was a Saturday.
December 28, 1964 was a Monday.
December 9, 1964 fell on a Wednesday.
December 26th, 1964 fell on a Saturday.
December 24, 1964 fell on a Thursday.
December 31, 1964 was a Thursday.
December 10th 1981 was a Thursday.
Friday
Wednesday.
Thursday