長ちょう寛かんちょうかんMeanings1nounChōkan eraJapanese era name (年号) spanning from 1163 to 1165. Used in historical contexts.長ちょう寛かん年ねん間かんに平清盛たいらのきよもりが勢せい力りょくを拡かく大だいした。Taira no Kiyomori expanded his power during the Chōkan era.