ŌhōŌhō was a Japanese era name after Eiryaku and before Chōkan. This period spanned the years from September 1161 through March 1163. The reigning emperor was Emperor Nijo.Change of eraJanuary 28, 1161 Ōhō gannen: The new era name was created to mark an event or a number of events. The previous era ended and a new one commenced in Eiryaku 2, on the 4th day of the 9th month of 1161.Events of the ''Ōhō'' era1161 : The emperor visited Kasuga Shrine and other shrines which were situated just outside the boundaries of the capital city.July 31, 1162 : Fujiwara no Tadazane died.