The next two occurrences will be in 2014 and in 2025.
May 31 falls on a Saturday in exactly 14.25% of all years, including, most recently, 2003.
May 31st, 1941 fell on a Saturday.
May 31st, 1986 fell on a Saturday.
May 31st, 1957 fell on a Friday. The following year, May 31st fell on a Saturday.
31st May 1975 was a Saturday.
July 31st, 1982 fell on a Saturday.
August 31st, 1963 fell on a Saturday.
January 31st, 2009 fell on a Saturday.
March 31st, 1956 fell on a Saturday.
July 31st, 1954 fell on a Saturday.
Saturday
It was a Saturday.