A jyotiḥśāstra (treatise on jyotisha) is a text from a classical body of literature on the topic of Hindu astrology, known as Jyotiṣa, dating to the medieval period of Classical Sanskrit literature (roughly the 3rd to 9th centuries CE).
Only the most important ones exist in scholarly editions or translations, while many remain unedited in Sanskrit or vernacular manuscripts.
There are a great number of contemporary publications, reflecting the persisting importance of astrology in Hindu culture, and the corresponding economical attractivity of the market in India.
Notable modern authors include Sri Yukteswar Giri (1855–1936) and Bangalore Venkata Raman (1912–1998).
Traditionally, jyotihshastra texts are classified into three broad categories:[1][2][3] According to Pingree, this classification, mentioned in sources such as the Brihat Samhita (1.9), does not cover the field adequately.