Chōgen

Chōgen was a Japanese era name after Manju and before Chōryaku. This period spanned the years from July 1028 through April 1037. The reigning emperors were Emperor Go-Ichijō of Japan and Emperor Go-Suzaku of Japan.

Change of era

1028 Chōgen gannen: 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.

Events of the ''Chōgen'' era

Chōgen 9, on the 17th day of the 4th month : In the 9th year of Emperor Go-Ichijō's reign, he died; and the succession was received by his son.Chōgen 9, in the 7th month : Emperor Go-Suzaku is said to have acceded to the throne.