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For the Zen Buddhist monk, see Keian Genju (1427-1508).

Keian (慶安 ?) was a Japanese era name (年号, nengō, ?, lit. "year name") after Shōhō and before Jōō. This period spanned the years from February 1648 through September 1652.[1] The reigning emperor was Go-Kōmyō-tennō (後光明天皇 ?).[2]


Change of era

  • 1648 Keian gannen (慶安元年 ?): The new era name was created in response to criticism that Shōhō was too closely related to Shōbō (焼亡, meaning "death by burning"). The previous era ended and a new one commenced in Shōhō 5, on the 2nd day of the 5th month.

The new era name was drawn from the Chinese classic, The I Ching: "At the end happiness, joy of quiet righteousness, answer the world unlimited" (乃終有慶、安貞之吉、応地無疆):

Events of the Keian era


  1. ^ Nussbaum, Louis-Frédéric. (2005). "Keian" in Japan encyclopedia, p. 503; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File.
  2. ^ a b Titsingh, Isaac. (1834). Annales des empereurs du japon, p. 412.
  3. ^ Screech, T. (2006). Secret Memoirs of the Shogans: Isaac Titsingh and Japan, 1779-1822, pp. 85-89.
  4. ^ Titsingh, p. 412; n.b., The first copy of this rare book was brought from Japan to Europe by Isaac Titsingh in 1796. Titsingh translated the text from Japanese and Chinese; and his work was then supplemented for posthumous publication by Julius Klaproth. The initial Japanese authorship is confirmed; the precise nengō-dating is confirmed in the same passage -- see Titsingh, p. 406.


External links

Keian 1st 2nd 3rd 4th 5th
Gregorian 1648 1649 1650 1651 1652

Preceded by:

Era or nengō:

Succeeded by:



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