It was a Monday.
February 11, 1987 was a Wednesday.
September 11, 1987 was a Friday.
July 11, 1987 fell on a Saturday.
Saturday.
May 11 2010 was a Tuesday.
May 11 1970 was a Monday.
May 11 1944 was a Thursday.
May 11, 1990 fell on a Friday.
May 11, 1952 fell on a Sunday.
May 11, 1956 fell on a Friday.
May 11, 1961 fell on a Thursday.
May 11, 1972 fell on a Thursday.