Chōkan
Japanese era from March 1163 to June 1165
Chōkan (長寛) was a Japanese era name (年号, nengō; lit. "year name") after Ōhō and before Eiman. This period spanned the years from March 1163 through June 1165. The reigning emperors were Nijō-tennō (二条天皇) and Emperor Rokujō-tennō (六条天皇).
Change of era
February 5, 1163 Chōkan gannen (長寛元年): The new era name was created to mark an event or series of events. The previous era ended and a new one commenced in Ōhō 3, on the 29th day of the 3rd month.
Events of the Chōkan era
1163 (Chōkan 1, 1st month): Taira no Shigemori (1138–1179) was promoted to the second rank of the 3rd class in the court hierarchy.
1163 (Chōkan 2, 2nd month): A large congregation of Buddhist priests came together at the Tōdai-ji and Kōfuku-ji temples to recite prayers for the prosperity of the Imperial Family.
September 14, 1164 (Chōkan 2, on the 26th day of the 8th month): The former-Emperor Sutoku died at the age of 46.
See also
Notes
References
Brown, Delmer M. and Ichirō Ishida, eds.
Begin with the source’s own compact description: “Chōkan” is japanese era from March 1163 to June 1165. The dossier treats that line as a proposition to test through Chōkan, Japanese and March, not as a finished interpretation.
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The phrase “japanese era from March 1163 to June 1165” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 27, 2026. The linked authority identifier is Q1193904. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1163, 1165, 1138 and 1179.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Chōkan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.