Original: According to the legendary account in the Kojiki, this historical figure would have been born on February 13, 711 BC (January 1 of Chinese calendar), and died, again according to legend, on March 11, 585 BC (both dates according to the lunisolar traditional Japanese calendar).
Simplified: Emperor Jimmu (January 1, 660 BC - March 11, 585 BC) was a legendary figure in the history of Japan.