May 31 1967 was a Wednesday.
July 31 1967 was a Monday.
August 31 1967 was a Thursday.
31 December 1980 was a Wednesday.
31 December 1931 was a Thursday.
31 December 1993 was a Friday.
31 December 1965 was a Friday.
December 31 1999 was a Friday.
December 31 1945 was a Monday.
December 31 1982 was on a Friday.
December 31 1976 was on a Friday.
December 31, 2005 was a Saturday.