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Overview
Key data
| Item | Detail |
|---|---|
| Period of use | 584 – 596 CE |
| Compilers | Zhang Bin, Liu Hui and others |
| Year head | Jian-yin |
Zhang Bin and the Kaihuang calendar
After the Sui unification the Kaihuang calendar was promulgated in 584 CE, made by Zhang Bin and Liu Hui, replacing the Daxiang. It largely followed northern practice with little innovation. Zhang Bin’s calendar was carried by powerful patronage; Liu Xiaosun and Liu Zhuo criticized its errors without success.
The dispute
In 594 CE Liu Xiaosun and others again raised the calendar’s faults, and the matter was finally settled. Zhang Zhouxuan then made the Daye calendar, and Sui calendrical work turned a corner.
The dispute shows that a calendar’s merit or fault is finally tested by observation, not long shielded by authority.
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 Suishu, Calendrical Treatise, juan 16.
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.