It was a Thursday.
a Thursday
18 February 1979 was a Sunday.
March 18, 1979, was a Sunday.
18 June 1979 was a Monday.
March 18 1979 was a Sunday.
July 18, 1979 fell on a Wednesday.
August 18, 1979 fell on a Thursday.
November 18, 1979 fell on a Sunday.
September 18, 1979 fell on a Tuesday.
January 18, 1931 was a Sunday.
18 January 1954 was a Monday.
18 January 1965 was a Monday.
January 18 1919 was a Saturday.