was a after Shōan and before Kagen. This period spanned the years from November 1302 through August 1303.Nussbaum, Louis-Frédéric. (2005). "Kengen" 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 empereurs du japon, p. 275-278; Varley, H. Paul. (1980). Jinnō Shōtōki. p. 239.
Change of era 1302 : The new era name was created to mark an event or a number of events. The previous era ended and a new one commenced in Shōan 4. The era name is derived from the I Ching and combines the characters ("heaven" in the Bagua) and ("foundation").
Events of the Kengen era 1302 (Kengen 1, 16th day of the 6th month):Emperor Go-Nijo visited the home of retired Emperor Kameyama.Perkins, George W. (1998). 1302 (Kengen 1): Major repairs and reconstruction at Yakushi-ji.Pier, Garrett Chatfield. (1914).
Notes
References 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