was a after Eiji and before Ten'yō. This period spanned the year from April 1142 through February 1144.Nussbaum, Louis-Frédéric. (2005). "Kōji" in ; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File . The reigning emperor was .Titsingh, Isaac. (1834). Annales des emepereurs du japon, pp. 186-188; Brown, Delmer et al. (1979). Gukanshō, pp. 324-326; Varley, H. Paul. (1980). Jinnō Shōtōki, p. 205.
Change of Era January 29, 1142 : The new era name was created to mark an event or series of events. The previous era ended and a new one commenced in Eiji 2, on the 28th day of the 4th month of 1142.Brown, p. 325.
Events of the Kōji Era 1143 (Kōji 2, 1st month): Cloistered Emperor Go-Toba-in, now known by the title Daijō Tennō or or Hōō, visited his mother.Titsingh, p. 186. 1143 (Kōji 2, 5th month): Emperor Konoe passed his days praying at Tōdai-ji and also at the temples on .
Notes
References Brown, Delmer M. and Ichirō Ishida, eds. (1979). Gukanshō: The Future and the Past. Berkeley: University of California Press. ; OCLC 251325323 Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ; OCLC 58053128 Titsingh, Isaac. (1834). Nihon Odai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691 Varley, H. Paul. (1980). A Chronicle of Gods and Sovereigns: Jinnō Shōtōki of Kitabatake Chikafusa. New York: Columbia University Press. ; OCLC 6042764
External links National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection