Shengshou wannian li 聖壽萬年曆

Shengshou wannian li 聖壽萬年曆 is a book on the calculation of the ephemerides of celestial bodies compiled by Zhu Zaiyu 朱載堉 (1536-c. 1610), who is better known as the author of books on music like Yuelü quanshu 樂律全書, Lülü zhengtong 律呂正統 or Lülü zheiyi bianhuo 律呂質疑辨惑.

During the early Ming period 明 (1368-1644), imperial astronomers continued to use the Yuan-period 元 (1279-1368) calendars, mainly the Shoushi Calendar (Shoushi li 授時曆) from 1276 and the Datong Calendar (Datong li 大統曆) from 1384, but the calculations of positions and eclipses deviated more and more from the fact. Zhu therefore presented in 1595 to the throne two texts, namely Lüli rongtong 律曆融通 (usually appended to the main text), and his text on calendric calculations in which he proved that the two old calculations were outdated. and presented updated calculations. The book's methods of astronomical calculations and related discussions on the "year surplus" (suiyu 歲餘; discrepancy between calculation and reality), the "solar motion" (richan 日躔), timekeeping (louke 漏刻), solar eclipses (rishi 日食), lunar eclipses (yueshi 月食), and the movements and "stations" of the five planets (wuwei 五緯) have considerable merits.

The oldest print of the 8-juan-long book is called Zheng Shizi lüli quanshu 鄭世子律曆全書. It is included in the imperial series Siku quanshu 四庫全書.