永えい長ちょうえいちょうMeanings1nounEichō era (1096.12.17–1097.11.21)A specific Japanese era name (年号) from the late Heian period. Used only in historical contexts.永えい長ちょう元がん年ねんは西せい暦れき1096年ねんにあたる。The first year of the Eichō era corresponds to 1096 CE.