{"document_url": "https://en.wikipedia.org/wiki/En%27%C5%8D"}
En'ō (延応) was a Japanese era name (年号,, nengō,, lit. "year name") after Ryakunin and before Ninji. This period spanned the years from February 1239 to July 1240. The reigning emperor was Shijō-tennō (四条天皇).

Change of era

Events of the En'ō Era