Tenchi: The Samurai Astronomer (2012)
Original title: 天地明察
Tenchi: The Samurai Astronomer is a 2012 Japanese-language drama movie directed by Yojiro Takita, with a running time of 2h 21m. It stars Aoi Miyazaki, Junichi Okada and Kiichi Nakai.
A chronicle of the life of Yasui Santetsu, a 17th century master of go who turned his attention to astronomy and created a new calendar for Japan. Based on the life of Santetsu Yasui (December 27, 1639-November 1, 1715), appointed as the first official astronomer in the Edo Period and would go on to create the Jokyo calendar at the imperial request.