About: List of emperors of Japan

This list of emperors of Japan presents the traditional order of succession. Records of the reigns are compiled according to the traditional Japanese calendar. In the nengō system which has been in use since the late-seventh century, years are numbered using the Japanese era name and the number of years which have taken place since that nengō era started.The sequence, order and dates of the first 28 emperors, and especially the first 16, are based on the Japanese calendar system.