《明史·志·卷七》
又经过二百七十三日九十三刻一十九分，而和秋分点相交，也是受太阳运行度数的限制，而在周天度数还差二度多。
又越二百七十三日九十三刻，一十九分，而即交秋分者，亦日为之限也，乃在天不及二度余。
After 273 days, 93 quarters, and 19 minutes, it intersects with the autumn equinox, which is also restricted by the number of sun runnings but is less than two degrees difference in the number of weeks.