Jōō (貞応), also romanized as Jō-ō, was a Japanese era name (年号, nengō, lit. year name) after Jōkyū and before Gennin. This period started in April 1222 and ended in November 1224. The reigning emperor was Go-Horikawa-tennō.
Events of the Jōō Era[change]
- 1222 (Jōō 2): Regulations established concerning salaries for land stewards (jitō) who were appointed by the shogunate
- 9 July 1223 (Jōō 2, 20th day of the 6th month): The buildings of the Asama Shrine at the base of Mount Fuji in Suruga province were re-built by Hōjō Tokimasa.