Wednesday.
11 April 1947 was a Friday.
April 11 1989 was a Tuesday.
April 11, 1958, was a Friday.
April 11 2010 was a Sunday.
April 11 1925 was a Saturday.
April 11, 1939 was a Tuesday.
April 11, 2003 was a Friday.
11 June 2001 was a Monday.
September 11, 2001 was a Tuesday.
August 11 2001 was a Saturday.
September 11 2001 was a Tuesday.
July 11, 2001 was on a Wednesday.