Monday, I'm nearly certain.
September 23, 1954 fell on a Thursday.
August 23 1999 was a Monday.
23 August 1966 was a Tuesday.
August 23, 1958 was a Saturday.
August 23, 1943 was on a Monday.
August 23, 1981, was a Sunday.
August 23, 1985 was a Friday.
23 August 1960 was a Tuesday.
August 23 1983 was a Tuesday.
August 23 2010 was a Monday.
Tuesday.
friday