March 30th (1939) was a Thursday. It's the 89th day of the year (90th in leap years) in the Gregorian calendar. There are 276 days left to the end of the year.
Historical Events for 30th March, 1939
» The Heinkel He 100 fighter sets a world airspeed record of 463 mph (745km/h).
» 'Detective Comics' 27 is released, introducing Batman.