A jyotiśhāstra is a text from a classical body of literature on the topic of Hindu astrology, known as Jyotiṣha, 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, such as the Yavanajataka (3rd century), Brihat Samhitā (6th century), Brihat Parāśara Horāśāstra (7th century) or Sārāvalī (8th century), while many remain unedited in Sanskrit or vernacular manuscripts.