thumb|329x329px|Asakusa Observatory of Tenmongata by Hokusai The Tenmongata (天文方, Astronomy Agency) was an institute for astronomical studies operated by the Tokugawa shogunate in Edo, Japan (today's Tokyo). It is one of the predecessors of today's University of Tokyo.
thumb|329x329px|Asakusa Observatory of Tenmongata by Hokusai The Tenmongata (天文方, Astronomy Agency) was an institute for astronomical studies operated by the Tokugawa shogunate in Edo, Japan (today's Tokyo). It is one of the predecessors of today's University of Tokyo.
== Overview == Traditionally, astronomical studies and revision of the calendar were carried out by the Onmyo-no-tsukasa (陰陽寮), which was established by Emperor Tenmu in the 7th century. The institute was established in 1684 when the Tokugawa Shogunate decided to switch from the Senmyō calendar, which had been in use for 823 years and had thus accumulated significant errors, to the newly invented Jōkyō calendar. The inventor of the calendar, Harumi Shibukawa, was appointed as the head of the institute.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).