The Tantra of Kalachakra is the basis of Tibetan astronomy. It explains some phenomena in a similar manner as modern astronomy science. Hence, Sun eclipse is described as the Moon passing between the Sun and the Earth.[1][dubious ][better source needed]

In 1318, the 3rd Karmapa received vision of Kalachakra which he used to introduce a revised system of astronomy and astrology named the "Tsurphu Tradition of Astrology" (Tibetan: Tsur-tsi) which is still used in the Karma Kagyu school for the calculation of the Tibetan calendar.[2][3]


  1. ^ An Introduction To Tibetan Astro. Science Archived February 3, 2009, at the Wayback Machine
  2. ^ The Third Gyalwa Karmapa, Rangjung Dorje, site of Karma Lekshey Ling Institute[dead link]
  3. ^ Staff. "Kagyu Lineage: The Third Karmapa Rangjung Dorje (1284 - 1339)". Kagyu Office of His Holiness the 17th Gyalwang Karmapa. Retrieved 2010-02-04.

Further reading