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Chōgen (長元 ?) was a Japanese era (年号, nengō, ?, lit. "year name") after Manju and before Chōryaku. This period spanned the years from 1028 through 1037. The reigning emperors were Go-Ichijō-tennō (後一条天皇 ?) and Go-Suzaku-tennō (後朱雀天皇 ?).[1]


Change of era

  • Chōgen gannen (長元元年 ?); 1028: The new era name Chōgen was created to mark and event or series of events. The previous era ended and the new one commenced in Manju 5, on the 25th day of the 7th month.[2]

Events of the Chōgen era

  • Chōgen 9, on the 17th day of the 4th month (1036): In the 9th year of Emperor Go-Ichijō's reign (後一条天皇9年), he died; and the succession (‘‘senso’’) was received by a his son.[3]
  • Chōgen 9, in the 7th month (1036): Emperor Go-Suzaku is said to have acceded to the throne (‘‘sokui’’).[4]


  1. ^ Titsingh, Isaac. (1834). Annales des empereurs du Japon, pp. 156-159; Brown, Delmer et al. (1979). Gukanshō, pp. 307-310; Varley, H. Paul. (1980). Jinnō Shōtōki. p. 195-196.
  2. ^ Bruce, p. 310.
  3. ^ Brown, p. 310; Varley, p. 44. [A distinct act of senso is unrecognized prior to Emperor Tenji; and all sovereigns except Jitō, Yōzei, Go-Toba, and Fushimi have senso and sokui in the same year until the reign of Go-Murakami.]
  4. ^ Titsingh, p. 160; Varley, p. 44.

External links

Chōgen 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th
Gregorian 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037
Preceded by
Era or nengō

Succeeded by


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