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Overview
Key data
| Item | Detail |
|---|---|
| Period of use | 1106 – 1126 CE |
| Compiler | Yao Shunfu |
| Year head | Jian-yin |
Yao Shunfu and the Jiyuan calendar
The Jiyuan calendar was made by Yao Shunfu, promulgated in 1106 CE and used until 1126.
Yao was skilled in observation, and the calendar was built on his new data for the sun’s and moon’s motions; its precision exceeded earlier work, and it stands for the late Northern Song.
A turn of the age
It was used twenty years and then the Northern Song fell. After the court moved south it changed calendars again; calendrical change and dynastic fortune are often recorded together.
Full text
No electronic full text of this work is available here. This calendar has no separate transmitted text; its methods survive scattered in the calendrical treatises of the standard histories. Among the histories held here, see Songshi, Calendrical Treatise, juan 81.
The title, date, summary and index structure compiled here are offered under CC BY 4.0 (attribution: Chujia Kuang · kuangchujia.com).
Compiled and arranged by Chujia Kuang.