嘉か応おうかおうMeanings1nounKaō era (1169.4.8–1171.4.21)historical termHistorical Japanese era name (年号) from the late Heian period. Used only in historical contexts.嘉か応おう元がん年ねんは西せい暦れき1169年ねんにあたる。The first year of the Kaō era corresponds to 1169 CE.