Zhao Zhiwei (趙知微)

Overview

Zhao Zhiwei was an official and Calendar-Maker.

Life and dates

Attested activity

AD 1181 二十一年十一月望
Directly stated · History of Jin 21, passage 13
AD 1171 十一年曆成
Directly stated · History of Jin 21, passages 9, 11
AD 1115 to AD 1234 終金之世
Directly stated · History of Jin 21, passage 16

Career and standing

calendar-maker 曆官
Directly stated · History of Jin 21, passage 11
Director of the Astronomical Directorate 司天監
Held
Directly stated · History of Jin 21, passage 11

Places and affiliations

Polity Jin 金 · Relation Served
Directly stated · History of Jin 21, passages 11, 16

Works and attributed material

Grand Clarity Calendar 大明曆
Relation Reviser
Directly stated · History of Jin 21, passages 11, 16

Events and relationships

Compared and adopted
AD 1181 二十一年十一月望 · Scholarly · Calendar author · With Ren Zhongjie (任忠傑)
Dated from the passage context · History of Jin 21, passage 13
Ordered to revise after eclipse errors
AD 1158 to AD 1177 正隆戊寅…大定癸巳…丁酉 · Scholarly · Reviser
Dated from the passage context · History of Jin 21, passages 8-11
Grand Clarity Calendar 大明曆
AD 1171 十一年曆成 · Scholarly · Reviser · Revised
Dated from the passage context · History of Jin 21, passages 9, 11
Relation Calendar compared with · Person Yelü Lü (耶律履)
Directly stated · History of Jin 21, passage 13

Assessments and attributes

Assessment calendar-closer-to-observed-eclipse · Mode named-source-report Witness Person Id Ren Zhongjie (任忠傑)
Directly stated · History of Jin 21, passage 13

Source notes

Through the whole Jin age only Zhao Zhiwei's calendar was used; the Yuan compilers' dynasty used it at first, then replaced it with the Season-Granting Calendar. 是以終金之世，惟用知微曆，我朝初亦用之，後始改《授時曆》焉。
Directly stated · History of Jin 21, passage 16

References in the histories

History of Jin, Chapter 21Volume 21 Treatises 2: Calendar 1: Seasonal Phases and Month Beginnings 1, Phases and Divination 2, Phases of the Sun's Path 3 · 3 passages

Open chapter

由是占候漸差，乃命司天監趙知微重修《大明曆》，十一年曆成。 Prognostication and observation drifted apart; Zhao Zhiwei, Director of the Astronomical Directorate, was therefore ordered to revise the Grand Clarity Calendar, and in the eleventh year the calendar was completed.

二十一年十一月望，太陰虧食，遂命尚書省委禮部員外郎任忠傑與司天曆官驗所食時刻分秒，比校知微、履及見行曆之親疏，以知微曆為親，遂用之。 In year 21, at the full moon of the eleventh month, the moon was eclipsed; the Ministry ordered Ren Zhongjie of the Rites Bureau and the calendar officers to verify the hour, minute, and second of the eclipse and compare Zhao Zhiwei's, Yelü Lü's, and the current calendar—Zhiwei's proved closer, and his calendar was adopted.

是以終金之世，惟用知微曆，我朝初亦用之，後始改《授時曆》焉。 Through the whole Jin age only Zhao Zhiwei's calendar was used; our dynasty used it at first as well, then replaced it with the Season-Granting Calendar.