《宋书·志·卷十二》
当大余满六十就减去六十，最后余下的数以干支名称来对应，并向外推后一天，就是与周正相对应的十一月冬至日的干支。
大余满六十去之，余命以纪，算外，天正十一月冬至日也。
When the greater remainder is full of 60, subtract 60, and find the corresponding celestial stem and branch for the remaining number. Then add one day to it to find the celestial stem and branch for the winter solstice of the eleventh lunar month that corresponds to the Zhou calendar.