The Xuanming calendar (宣明历), also known as Senmyō-reki or Senmei-rekiNussbaum, Louis-Frédéric. (2005). "Semmei-reki" in Japan Encyclopedia, at p. 840. in its Japanese version, was a Chinese lunisolar calendar. It was used in China during the 9th century as well as in the Koryo kingdom in Korea; in Japan it remained in use from the late-9th century to the late-17th century.Orchiston, Wayne; Nakamura, Tsukao; Strom, Richard. (2011). Highlighting the history of astronomy in the Asia-Pacific Region, p. 159. In China, the Xuanming calendar was the penultimate calendar to be used in the Tang dynasty. In 893, it was replaced by the Chongxuan calendar (崇玄曆), which was used to the end of the Tang dynasty and beyond.Alan Kam Leung Chan, Gregory K Clancey, Hui-chieh Loy, Historical Perspectives On East Asian Science, Technology And Medicine, World Scientific, 24 July 2002
