Tuesday
Dec 31 2013 is a Tuesday.
Wednesday
It was a Wednesday.
Friday
December 31, 1946 fell on a Tuesday.
December 31, 1953 was a Thursday.
December 31, 1959 fell on a Thursday.
Thursday
March 31st 1946 was a Sunday.
December 31st, 1985 fell on a Tuesday.
yes
December 31, 1990 was Monday.