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{{nihongo|'''Keian'''|慶安}} was a {{nihongo|[[Japanese era name]]|年号,|''nengō'',|lit. "year name"}} after ''[[Shoho|Shōhō]]'' and before ''[[Jōō (Edo period)|Jōō]].''  This period started in February 1648 and ended in September 1652.<ref>[[Louis-Frédéric|Nussbaum, Louis-Frédéric]]. (2005). [https://books.google.com/books?id=p2QnPijAEmEC&pg=PA503 "''Kei'an''"] in ''Japan encyclopedia'', p. 503.</ref> During this time, the emperor was {{nihongo|[[Emperor Go-Komyo of Japan|Go-Kōmyō]]''-tennō''|後光明天皇}}.<ref>Nussbaum, [https://books.google.com/books?id=p2QnPijAEmEC&pg=PA256 "Go-Kōmyō Tennō,"] p. 256; [[Isaac Titsingh|Titsingh, Isaac.]] (1834). [https://books.google.com/books?id=18oNAAAAIAAJ&pg=PA412  ''Annales des empereurs du japon'', p. 412.]</ref>

==Events of the ''Keian'' era==
[[File:Nihon Odai Ichiran 1834.jpg|thumb|right|''Nihon Ōdai Ichiran'' was first published in the 5th year of ''Keian'']]
* '''1648''' (''Keian 1''): Legal code about city life and business are established in Osaka<ref>[[John Whitney Hall|Hall, John Whitney]]. ''Early Modern Japan,'' p. xx.</ref>

* '''1649''' (''Keian 2''): Five-storied [[pagoda]] at {{nihongo|[[Sensō-ji]]|金龍山浅草寺|Kinryū-zan Sensō-ji}} was built in [[Asakusa]].<ref>Nihon Gaiji Kyōkai. (1942). [https://books.google.com/books?id=F4kTAAAAIAAJ&q=keian+  ''Contemporary Japan: a Review of Japanese Affairs,'' Vol. 11, Part 2, p. 749.]</ref>

* '''1649''' (''Keian 2''): Legal code for peasants established by [[Tokugawa Iemitsu]].<ref>Nussbaum, [https://books.google.com/books?id=p2QnPijAEmEC&pg=PA503 "''Kei'an no ofuregake''"] at p. 503.</ref>

* '''1 April 1649''' (''Keian 2, 20th day of the 2nd month'')<!-- NengoCalc  慶安二年二月二十日 -->: There was a major earthquake in Edo.<ref>Titsingh, [https://books.google.com/books?id=18oNAAAAIAAJ&pg=PA412 p. 412.]</ref>

* '''1651''' (''Keian 4''): Plot to overthrow the Tokugawa, also known as the [[Keian Uprising]].<ref>Nussbaum, [https://books.google.com/books?id=p2QnPijAEmEC&pg=PA503 "''Kei'an jinken''"] at p. 503; [[Timon Screech|Screech, Timon]]. (2006). ''Secret Memoirs of the Shogans: Isaac Titsingh and Japan, 1779-1822'', pp. 85-89.</ref>

* '''1652''' (''Keian 5, 5th month''):  ''[[Nihon Odai Ichiran]]'' was published.<ref>Titsingh, [https://books.google.com/books?id=18oNAAAAIAAJ&pg=PA406   pp. 406, 412.]</ref>  The French version of this work was the first Japanese history book to be published in the West.

==Related pages ==
* [[Edo period]]

== References ==
{{reflist|1}}

== Other websites ==
* [[National Diet Library]], "The Japanese Calendar" [http://www.ndl.go.jp/koyomi/e/ -- historical overview plus illustrative images from library's collection]


{| class=wikitable style="font-size:80%; text-align: center; margin:0 auto 0.8em auto;"
|-
!Keian!!1st!!2nd!!3rd!!4th!!5th
|-
| || 1648 || 1649 || 1650 || 1651 || 1652
|}
{| border =1 cellpadding=0 cellspacing=0 style=" text-align: center; margin:0 auto 0.8em auto;"
|-
| width =20% |Preceded by:<br>''[[Shōhō]]''
| width =30% |[[Japanese era name|Era or ''nengō'']]:<br>'''Keian'''
| width =20% |Succeeded by:<br>''[[Jōō (Edo period)|Jōō]]''
|}

{{Japanese era name}}


{{Japan-stub}}

{{DEFAULTSORT:Keian}}
[[Category:Japanese eras]]
[[Category:1648 establishments]]
[[Category:17th-century establishments in Japan]]
[[Category:1650s disestablishments in Japan]]