《宋书·志·卷十三》
舍弃下午取用了巳，午的方位上并不是没有星一定要以中央星宿为依据，其他星宿就不能用来确定时令了吗?
必据中宿，余宿岂复不足以正时。
Give up the afternoon and use the position of Si. There is no need to take the central constellation as the basis. Can't other constellations be used to determine the time?