From a perpetual calendar: May 11, 1939 was on a Thursday.
Monday
May 11th, 1980 was a Sunday.
May 11th 1963 was a Saturday.
11th May 1951 was a Friday.
May 11th, 1966 fell on a Wednesday.
Wednesday
Saturday
Tuesday
15 May 1939 was on a Monday.
May 30, 1939 was a Tuesday.
May 22 1939 was on a Monday.
May 16, 1939 was a Tuesday.