Taien calendar

, also known as Daien or Daiyan or Dayan calendar, was a Japanese lunisolar calendar (genka reki).Nussbaum, Louis-Frédéric. (2005). "Calendar" in Japan Encyclopedia, pp. 98-99; Bramsen, William. (1880). Japanese chronological tables, p. 25.  It was developed in China; and it was used in Japan from about 746 to 857.Trimble, Virginia et al. (2007). "Yixing" in Biogaphical Encyclpedia of Astronomers, pp. 1252-1253, citing Ohashi, Yukio. (1995).“Daien-reki no hokan-hō nit suite.” (On the Interpolation used in the Dayan calendar) Kagakusi Kenkyu (Journal of History of Science), ser. 2, 34, 195: 170–176.

History
The calendar was created in China.  It was first used in the 17th year of the Kaigen era  during the Tang Dynasty.Clement, Ernest W. (1902). "Japanese Calendars," in  Transactions of the Asiatic Society of Japan, Vol. 30,  pp. 1-82, 73; Japan, Monbushō. (1876).  An outline history of Japanese education: prepared for the Philadelphia International Exhibition, 1876, p. 160.

The  Taien-reki system corrected errors in the Genka calendar and Gihō calendar which were used in Japan in the first half of the 8th century. It was the work of Yixing, who was a Chinese astronomer.

Related pages
 Japanese calendar
 Sexagenary cycle
 Genka calendar
 Gihō calendar  
 Goki calendar 
 Semmyō calendar

References

Other websites
 National Diet Library, "The Japanese Calendar"

Category:Calendars