Study on the Period of the Use of Datong-li in Korea

Details Study on the Period of the Use of Datong-li in Korea Study on the Period of the Use of Datong-li in Korea

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jass...27...55l&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 27, no. 1, p. 55-68

Astronomy and Astrophysics

Astronomy

Calendrical Methods (Datong-Li, Shoushi-Li, Shixian-Li), Astronomical Almanac, Period (Goryeo Dynasty, Joseon Dynasty)

Scientific paper

It has been generally known that Datong-li (a Chinese calendar in the Ming dynasty)was first introduced into Korea in the nineteenth reign of King Gongmin (1370) of the Goryeo dynasty and lasted to the third reign of King Hyeojong (1652) of the Joseon dynasty. This understanding is based on the records of Goryeo-sa (History of the Goryeo dynasty) and of Seoungwan-ji (Official book of Seoungwan)/ Jeungbomunheon bigo (Explanatory Notes of Library ocument). To verify the period of the use of Datong-li in Korea, we develop a Fortran code to calculate the calendar day by Datong-li and also investigate historical literatures and extant almanacs. As a result, we find the possibility that Datong-li had been in use since 1389 at least. However,we cannot confirm whether Datong-li was first enforced in 1370 or not. On the other hand, we confirm that Datong-li was used until 1653 and reintroduced during the period from 1667 to 1669. Also, we find that previous studies had some errors in the sexagenary cycle of the real first day of a month. We think that this study will contribute to understanding the calendrical history of the Joseon dynasty.

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