一切經音義 10.215

10.215

旃蒙歲（之然反爾雅云在乙曰旃蒙在巳曰大荒落時永泰元年乙巳歲夏初四月也）。

旃蒙歲 (Pronounced 之 plus 然 in fanqie. The Erya says: 'When [the year star] is at yi, it is called zhanmeng; when at si, it is called dahuangluo.' This refers to the fourth month, early summer, of the yisi year, the first year of the Yongtai era [765 CE]).