Jōwa (Heian period)


Jōwa was a Japanese era name after Tenchō and before Kashō. This period spanned the years from January 834 through July 848. The reigning emperors were Emperor Junna and Emperor Ninmyō.

Change of era

By the Jōwa era, the formality of male promotions were announced by the seventh day of each new year, while those for women were announced on the eighth day.