Thursday. Check out the related link I added.
Nov 27 1990 was a Tuesday.
September 27, 2013 will fall on a Friday.
September 27 1985 was a Friday.
April 27 1990 was a Friday.
September 4, will be a Thursday.
August 27 1990 was a Monday.
27 September 1959 was a Sunday.
27 September 1998 was a Sunday.
November 27, 1990 fell on a Tuesday.
March 27, 1990 fell on a Tuesday.
27 September 1958 was a Saturday.
27 September 1918 was a Friday.