BornLongmen (now Hancheng, Shaanxi Province), China, circa 145–135 BCE
DiedChina, circa 90 BCE
Sima Qian was a Chinese historian and astronomer in the Western (Former) Han Dynasty who helped devise a calendar in which a 13 lunar month occurred as needed, rather than always at the end of the solar year.
- Needham, Joseph (with the collaboration of Wang Ling): Science and Civilisation in China, volume 3, Mathematics and the Sciences of the Heavens and the Earth (Cambridge: Cambridge University Press, 1959).Google Scholar
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