Wednesday
March 31 1973 was a Saturday.
October 31, 1973 fell on a Wednesday.
31 January 1965 was a Sunday.
January 31, 1957, was a Thursday.
January 31, 1949, was a Monday.
31 January 1936 was a Friday.
Tuesday
Friday
January 31, 1953 fell on a Saturday.
January 31, 1962 fell on a Wednesday.
January 31, 1976 fell on a Saturday.
January 31, 1947 fell on a Friday.