《明史·志·卷十一》
盈历在盈初限以下是盈初限，在以上用半、岁周相减，余数就是盈末限。
视盈历在盈初限下为盈初已上用减半岁周，余为盈末限。
If the rising calendar is below the rising limit, then it is the rising limit. If it is above the rising limit, then subtract the half year from the annual cycle, and the remainder is the waning limit.