Some really important things happened on this date, acc'g. to Gurunet:
Today in History

Macbeth: king of Scotland was murdered by Malcolm III, whose father, Duncan I, Macbeth had killed to acquire the throne (1057)

V-J Day: marked Japan's unconditional surrender in WWII (1945)

India, Pakistan: separated and became independent of British rule (1947)

Shameful secret: I hadn't known that Macbeth was a real person.