31 August 1957 was a Saturday.
October 31, 1957 fell on a Thursday.
Friday
31 January 1965 was a Sunday.
January 31, 1949, was a Monday.
31 January 1936 was a Friday.
January 31, 1947 fell on a Friday.
January 31, 1989 fell on a Tuesday.
January 31, 1945 fell on a Wednesday.
January 31, 1998 fell on a Saturday.
January 31, 1997 fell on a Friday.
January 31, 1953 fell on a Saturday.