December 31st, 1959 fell on a Thursday.
December 31st, 2009 was a Thursday.
December 31st, 1951 fell on a Monday.
It was a Tuesday.
Sunday
It was a Monday.
December 31st, 1979 was a Monday.
December 31 2002 was a Tuesday.
December 31st, 1969 was a Wednesday.
December 8 1959 was on a Tuesday.
December 5th 1959 was a Saturday.
4th December 1959 was a Friday.
December 16, 1959 was a Wednesday.