Jōtoku (承徳) was a Japanese era name (年号, nengō, "year name") after Eichō and before Kōwa. This period spanned the years from November 1097 through August 1099.[1] The reigning emperor was Horikawa-tennō (堀河天皇).[2]
Change of Era
January 16, 1097Jōtoku gannen (承徳元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Eichō 2, on the 21st day of the 11th month of 1097.[3]