The given date was a Monday.
October 23, 1931 fell on a Friday.
Monday. You can find a day of week calculator at this site. Just enter in the date and it will calculate it for you: http://www.searchforancestors.com/utility/dayofweek.html
23 November 1970 was a Monday.
November 23 1960 was a Wednesday.
November 23, 1963 was a Saturday.
November 23, 1949 was a Wednesday.
23 November 1967 was a Thursday.
November 23, 1971 was a Tuesday.
November 23 1945 was a Friday.
November 23 1957 was a Saturday.
November 23 1948 was a Tuesday.
November 23 2010 was a Tuesday.