Hōryaku calendar

Hōryaku calendar published in 1755. Exhibit in the National Museum of Nature and Science, Tokyo, Japan.

Hōryaku calendar (宝暦暦 Hōryaku-reki) was a Japanese lunisolar calendar (genka reki).^[1] It was also known as Horiki Kojutsu Gen-reki. It was published in 1755.^[2]

History

The Hōreki Kōjutsu Genreki system was the work of Abe Yasukuni,^[3] Shibukawa Kōkyō,^[4] and Nishiyama Seikyū.^[5] Errors in the calendar were corrected in 1798^[6] and in 1844.^[7] In 1872, the Western calendar was adopted.^[3]

See also

• Japanese calendar
• Sexagenary cycle
• Hōreki

References

1. Renshaw, Steven L. and Saori Ihara. (2007). "Takahashi, Yoshitoki," Biographical Encyclopedia of Astronomers (Virginia Trimble, ed.), p. 1121.
2. Nussbaum, Louis-Frédéric. (2005). "Calendar" in Japan Encyclopedia, p. 98.
3. Nussbaum, "Abe Yasukuni" at p. 4.
4. Nussbaum, "Shibukawa Shunkai" at p. 850.
5. Nussbaum, "Hōreki Kōjutsu Genreki" at p. 352.
6. Nussbaum, "Kansei-reki" at p. 478; Orchiston, Wayne et al. (2011). Highlighting the History of Astronomy in the Asia-Pacific Region, p. 155.
7. Orchiston, p. 155.

External links

• National Diet Library, "The Japanese Calendar"