770 Hōki gannen (宝亀元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Jingo-keiun 4, on the 18th day of the 8th month of 770.
October 23, 770 (Hōki 1, 1st day of the 10th month): The era name was changed to mark the beginning of Emperor Konin's reign.
778 (Hōki 9): The emperor granted Kashima-jinja a divine seal for use on documents.
August 28, 779 (Hōki 10, 7th month): Fujiwara no Momokawa died at age 48.
781 (Hōki 12, 4th month ): The emperor abdicated in favor of his son, who would later come to be known as Emperor Kanmu. Emperor Kōnin's reign had lasted for 11 years.
781 (Hōki 12, 12th month): Kōnin died at the age of 73.
Hōki (宝亀) was a Japanese era name (年号, nengō, "year name") after Jingo-keiun and before Ten'ō. This period spanned the years from October 770 through January 781. The reigning emperor was Kōnin-tennō (光仁天皇).