Jingo-keiun
Jingo-keiun was a Japanese era name after Tenpyō-jingo and before Hōki. This period spanned the years from August 767 through October 770. The reigning empress was Empress Shōtoku-tennō. This was the same woman who had reigned previously as the former Empress Kōken.
Change of era
767 Jingo-keiun gannen: The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Tenpyō-jingo 3, on the 18th day of the 8th month of 767.Events of the ''Jingo-keiun'' era
8 September 769 : In the 5th year of Shōtoku-tennōs reign, the empress died; and she designated Senior Counselor Prince Shirakabe as her heir.770 : The succession was received by a 62-year-old grandson of Emperor Tenji.770 : Emperor Kōnin was said to have acceded to the throne in a formal ceremony;and the nengō was changed to Hōki on the very same day.The Jingō-kaihō' was a copper coin issued from 765 to 796. It had a diameter of about 23 mm and a weight of between 3.4 and 4.5 grams.