31st May 1960 was a Tuesday.
May, 31st, 1985, was a Friday.
May 31st, 1974 fell on a Friday.
May 31st, 1986 fell on a Saturday.
May 31st, 1941 fell on a Saturday.
It was a Thursday.
31st May 1975 was a Saturday.
May 31, 1965, was a Monday.
May 31st, 1957 fell on a Friday. The following year, May 31st fell on a Saturday.
The day of the week was Thursday, if that is what you are asking.
31st October 1967 was a Tuesday.
Jan 31st 1968 was a Wednesday.