《晋书·志·第八章》
求次日：每天加一度，分不加，经过斗宿时除去斗宿分，如果分少不足减，度数减一化为分，再减之。
求次日，日加一度，分不加，经斗除斗分，分少，退一度。
Seek the next day: Add one degree each day, but do not add minutes. When passing through the fighting constellation, remove the fighting constellation minutes. If there are not enough minutes to subtract, subtract one degree, convert it to minutes, and then subtract it.