The was a Japanese lunisolar calendar (genka reki).Renshaw, Steven L. and Saori Ihara. (2007). "Takahashi, Yoshitoki," Biographical Encyclopedia of Astronomers (Virginia Trimble, ed.), p. 1121. It was also known as Hōryaku Kōjutsu Gen-reki (). It was published in 1755.Nussbaum, Louis-Frédéric. (2005). "Calendar" in Japan Encyclopedia, p. 98.
History The Hōryaku Kōjutsu Genreki system was the work of Abe Yasukuni,Nussbaum, "Abe Yasukuni" at p. 4. Shibukawa Kōkyō,Nussbaum, "Shibukawa Shunkai" at p. 850. and Nishiyama Seikyū.Nussbaum, "Hōreki Kōjutsu Genreki" at p. 352. Errors in the calendar were corrected in 1798Nussbaum, "Kansei-reki" at p. 478; Orchiston, Wayne et al. (2011). Highlighting the History of Astronomy in the Asia-Pacific Region, p. 155. and in 1844.Orchiston, p. 155. In 1872, the Western calendar was adopted.
See also Japanese calendar Sexagenary cycle Hōreki
References
External links National Diet Library, "The Japanese Calendar"