Concerning the areas located remotely from the center of Japan, such as Hokkaido, the northern Tohoku area and the islands in the southeast of the main islands of Japan, different classifications of historical periods are used (for more information, refer to the table of the classification of historical periods in Japanese history).
また、北海道・北東北、南西諸島などの周縁部については、これらとは異なる時代区分が用いられている（詳細→日本史時代区分表）。