Tuesday.
January 15, 1968 was a Monday.
November 15, 1968 fell on a Friday.
June 15, 1968 fell on a Saturday.
Sunday
It was a Sunday.
It was a Monday.
15 October 2012 will be a Monday.
October 15, 1970, was a Thursday.
October 15 1971 was a Friday.
October 15, 1997 was on a Wednesday.
October 15, 2007 was a Monday.
October 15 2010 was a Friday.