Saturday.
18 September 1947 was a Thursday.
The day of the week April 18,2007 occured was on Thursday.
March 18 1949 was a Friday.
March 18 1979 was a Sunday.
November 18 1978 was a Saturday.
February 18, 1976 fell on a Wednesday.
18 March 1976 was on a Thursday.
18 September 1947 was a Thursday.
September 18 1961 was a Monday.
September 18 2010 was a Saturday.
September 18, 1985 fell on a Wednesday.
September 18, 1958 fell on a Thursday.
September 18, 1970 fell on a Friday.
September 18, 1977 fell on a Sunday.
September 18, 1995 fell on a Monday.
September 18, 2011 fell on a Sunday.
September 18, 1957 fell on a Wednesday.