May 9 1942 was a Saturday.
Friday
It was a Wednesday.
From a US perpetual calendar: August 9, 1942 was on Sunday.
May 9 was a Saturday
9 May 1945 was a Wednesday.
May 9 1955 was on a Monday.
May 9 1931 was on a Saturday.
May 9 1947 was on a Friday.
May 9 1959 was a Saturday.
May 9 1947 was a Friday.
May 9 1989 was a Tuesday.
May 9 2000 was a Tuesday.