It was on a Wednesday.
December 13 1967 was a Wednesday.
October 13 1967 was a Friday.
January 13, 1967 was a Friday.
November 13, 1967, was a Monday.
August 13 1967 was on a Sunday.
February 13 1967 was on a Monday.
13 July 1967 was a Thursday.Thursday
13 December 2001 was a Thursday.
December 13 1919 was a Saturday.
13 December 1930 was a Saturday.
December 13 1950 was a Wednesday.
December 13 2010 was a Monday.