May 18th, 1939 (THURSDAY)
ÉIRE: The new airport at Rineanna (Shannon) opens. This new field is ideally situated to exploit any forthcoming trans-Atlantic routes. More...
UNITED KINGDOM: Light cruiser HMS Hermione launched.
GERMANY: 867 women from Lichtenburg concentration camp are moved to Ravensbrück, to work on the extension of the camp.
TERRITORY OF HAWAII: Honolulu's first blackout drill lasts 20 minutes (Denis Peck)