Chōwa (長和) was a Japanese era name (年号, nengō, lit.
"year name") after Kankō and before Kannin.
This period spanned the years from December 1012 through April 1017.
[1] The reigning emperors were Sanjō-tennō (三条天皇) and Go-Ichijō-tennō (後一条天皇).
[2]