For the Jewish surname, see
Kagan,
the Norwegian island, and
Kågen.
Kagen (嘉元) was a Japanese era name (年号, nengō, lit. "year name") after Kengen and before Tokuji. This period spanned the years from August 1303 through December 1306.[1] The reigning emperor was Go-Nijō-tennō (後二条天皇).[2]
- 1303 Kagen gannen (嘉元元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Kengen 2.
- July 17–27, 1303 (Kagen 1, 13th-23rd days of the 6th month): A white comet ("broom star") was seen at azimuth in the northeast each day at dawn for 10 days.[3]
- October 4, 1305 (Kagen 3, 15th days of the 9th month): Former Emperor Kameyama's death.[4]
Titsingh, Isaac. (1834). Annales des empereurs du Japon, pp. 275-278; Varley, H. Paul. Jinnō Shōtōki, p. 239.
- Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128
- Pankenier, David W., Zhentao Xu and Yaotiao Jiang. (2008). Archaeoastronomy in East Asia: Historical Observational Records of Comets and Meteor Showers from China, Japan, and Korea. Amherst, New York: Cambria Press. ISBN 9781604975871 ISBN 1604975873; OCLC 269455845
- 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. ISBN 9780231049405; OCLC 6042764