Jyotisha is the traditional Hindu system of astronomy and astrology. It is also known as Hindu astrology, Indian astrology, and more recently Vedic astrology. The term Hindu astrology has been in use as the English equivalent of Jyotiṣa since the early 19th century, whereasVedic astrology is a relatively recent term, entering common usage in the 1980s with self-help publications on Āyurveda or Yoga. Vedanga Jyotisha are one of the earliest writings about astrology and astronomy within Vedas. Historical documentation suggests horoscopic astrology in the Indian subcontinent came from Hellenic influences post-dating the Vedic period.
It has been divided into three main branches:
Siddhānta: Indian astronomy.
Saṁhitā: Mundane astrology, predicting important events related to countries such as war, earthquakes, political events, financial positions, electional astrology, house and construction related matters (Vāstu Śāstra), animals, portents, omens, and so on.
Horā: Predictive astrology in detail.