Permanent historical records · Updated 2026-11-03

809 in Japan

Explore 5 historical events and records for Japan in 809.

Historical records for Japan in 809

Sorted by month and day. Records with no month are shown last. Showing 5 of 5 unique records.

5Unique records
1 of 1Page
5Named events on this page
2Named people on this page
2Places on this page

December

Retirement to Heijo-kyo

Heizei · Heijo-kyo · House / House of Heian Period

The retired Heizei moves to the former capital at Heijo-kyo in Nara after his abdication.

Other events (month unknown)

Abdication

Heizei · Heian-kyo · House / House of Heian Period

Heizei abdicates because of illness in favor of his younger brother, who becomes Emperor Saga.

Prince Takaoka Named Crown Prince

Heizei · Heian-kyo · House / House of Heian Period

Emperor Saga designates Heizei's son Prince Takaoka as crown prince after succeeding to the throne.

Saga Enthroned

Heizei · Heian-kyo · House / House of Heian Period

Following Heizei's abdication, his younger brother takes the throne as Emperor Saga.

Succession

Saga · House / House of Heian Period

Succeeds as Emperor of Japan

How these records were prepared

Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.