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Sitianjian, the official name, is in charge of observing astronomy, calculating the calendar, and controlling the astronomical calendar in the early Yuan DynastyCentral institutions。Later, it was the Astronomical School.Established in the Jin DynastySi Tiantai, scribeSecretary SupervisorHe is in charge of astronomy and weather, and is also a professor and student.Set up promotion points, supervisorsJuvenile prisonJudge, professor, Sitian Guangou, etc.It has jurisdiction over astronomy, calendar calculation, three forms, tests and missing inscriptions.At the beginning of the Yuan Dynasty, due to the gold system, the company set up a roof and was under the supervision of the secretary.
AncestorTo yuanEleven Years (1274) and Hui HuiSi TiantaiMerged into one, and recruited students to study in Taiwan the next year.Fifteen years (1278)Imperial College of History, stood side by side with Sitiantai, and the Imperial Academy of History was set up to observe the phenomena. Sitiantai only taught students and became an astronomy school.
YanyouIn the first year (1314), it was renamed Sitianjian.RankTop 3。Seven year (1320) dropTop four products。One leader and three supervisors will be appointed,Juvenile prisonFive officials, four officials, one magistrate, several officials such as Ling Shi.Officially ownedTo promote learning, ProfessorLearn to correct, astronomy, calendar calculation, three forms, tests, missed inscriptions of various disciplines, yin and yang, Fu Suguan, Si Chenguan, etc.ratedAstronomer75 people.
Sitianjian was set up in many dynasties, but its name was different.There were imperial officials in the Zhou Dynasty and after the Qin and Han DynastiesTaishiling。Established in Sui DynastyEunuch, set up in the Tang DynastyTaishi Bureau, and later changed to Tiantai, subordinated toSecretariat Province。There were Sitianjian in the Song and Yuan Dynasties, and another one in the Yuan DynastyImperial College of History, there are three bureaus: calculation bureau, testing bureau, and leakage bureau.In the 17th year of the Yuan Dynasty (1280)Return to the supervisor, the task of "observing the image and developing the calendar".
In the early Ming Dynasty, there were Sitianjian and Huihui Sitianjian, including astronomy, missing inscriptionsGrand Unified CalendarFour branches of the Huihui calendar;It was renamed in the third year of Hongwu (1370)Imperial CollegeIn the Qing Dynasty, it was called the Imperial Court, and set upSupervisor、Supervisor deputyWait for officials.European missionaries joined after the Ming Dynasty. In the second year of Hongwu (1369), HeidirMadrutin、MahamaFather and son successively served as the supervisor.Tang Ruowang revised it in the early Qing Dynasty“Chronological calendar”。
《Time service calendar》The number of days of a year is precisely written, and Shangyuan Jiannian is officially abolishedChina FirstAstronomical books of great importance.
