The calendar was created in 425 during the time of China's
Southern and Northern Dynasties. It is named after (the translation of) the
era in Chinese history. The
Genka-reki system was brought to Japan from Korea by a Buddhist monk. The earliest record of this calendar in Japan is in the 10th month of the 10th year of the reign of
Empress Suiko (602), during the
Asuka period of Japanese history. ==See also==