Keian

964–968	Kōhō
968–970	Anna
970–973	Tenroku
973–976	Ten'en
976–978	Jōgen
978–983	Tengen
983–985	Eikan
985–987	Kanna
987–988	Eien
988–990	Eiso
990–995	Shōryaku
995–999	Chōtoku
999–1004	Chōhō
1004–1012	Kankō
1012–1017	Chōwa
1017–1021	Kannin
1021–1024	Jian
1024–1028	Manju
1028–1037	Chōgen
1037–1040	Chōryaku

806–810	Daidō
810–824	Kōnin
824–834	Tenchō
834–848	Jōwa
848–851	Kashō
851–854	Ninju
854–857	Saikō
857–859	Ten'an
859–877	Jōgan
877–885	Gangyō
885–889	Ninna
889–898	Kanpyō
898–901	Shōtai
901–923	Engi
923–931	Enchō
931–938	Jōhei
938–947	Tengyō
947–957	Tenryaku
957–961	Tentoku
961–964	Ōwa

645–650	Taika
650–654	Hakuchi
686–686	Shuchō
701–704	Taihō
704–708	Keiun
708–715	Wadō
Nara
715–717	Reiki
717–724	Yōrō
724–729	Jinki
729–749	Tenpyō
749	Tenpyō-kanpō
749–757	Tenpyō-shōhō
757–765	Tenpyō-hōji
765–767	Tenpyō-jingo
767–770	Jingo-keiun
770–781	Hōki
781–782	Ten'ō
782–806	Enryaku

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

April 1, 1649 (Keian 2, 20th day of the 2nd month): There was a major earthquake in Edo.^[2]
1651 (Keian 4): Keian Uprising. Plans by well-organized ronin to attack several Tokugawa strongholds simultaneously were timely discovered. The attempt plan to overthrow the Edo Bakufu by Marubashi Chuya and Yui Shōsetsu was thwarted.^[3]
1652 (Keian 5, 5th month): Nihon Ōdai Ichiran is first published in Kyoto under the patronage of the tairō Sakai Tadakatsu, daimyo of the Obama Domain of Wakasa Province.^[4]

Notes

^ 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.
^ ^a ^b Titsingh, Isaac. (1834). Annales des empereurs du japon, p. 412.
^ Screech, T. (2006). Secret Memoirs of the Shogans: Isaac Titsingh and Japan, 1779-1822, pp. 85-89.
^ 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.

References

Nussbaum, Louis Frédéric and Käthe Roth. (2005). Japan Encyclopedia. Cambridge: Harvard University Press. 10-ISBN 0-674-01753-6; 13-ISBN 978-0-674-01753-5; OCLC 48943301
Screech, Timon. (2006). Secret Memoirs of the Shoguns: Isaac Titsingh and Japan, 1779-1822. London: RoutledgeCurzon. 10-ISBN 0203099850, 13-ISBN 9780203099858; OCLC 65177072
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

External links

National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection

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

Preceded by:
Shōhō

Era or nengō:
Keian

Succeeded by:
Jōō

This article about a Japanese era name is a stub. You can help Wikipedia by expanding it.

[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.

[t412-2] 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.

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