Classification of Astrology

The Vedas which are the sacred Hindu scriptures, containing eternal knowledge. Astrology is as a branch of Vedas known as Vedanga with the help of which it is possible to know about all the past and future event. There are total 6 vedangs
1.Shiksha : This branch deals in study of technique of correct pronunciation of words
2.Chhanda : Deals in rhythm,pasue,stress feature of utterance of the Vedic 'Suktas'.
3.Vyakarana : Deals in grammatical aspects of the language.
4.Nirukta : Which explains the difficult words, 'padas' and 'mantras'.
5.Kalpa : Deals ritualistic aspects of the Vedas.
6.Jyotisha : It is one of the most important of the Vedangas.

Astrology is further subdivided into 3 parts-Siddhantas,Samhita,Hora.
Siddhantas deals in astrolonomical aspect of astrology. The great astrologer Varahmihir considers the following 5 in his book “Pancha Sidhantika”
(a) Surya Siddhanta
(b) Paulisha Siddhanta
(c) Romaka Siddhanta
(d) Vasishtha Siddhanta
(e) Paitamaha Siddhanta
Samhita deals in world event as well as meteorological predictions. The annual world predictions which are generally based either on Hindu New Year commencing on the Chaitra Shukla Pratipada, or on the solar Ingress into Mesha, fall under the Samhita astrology.
Hora deals in human horoscopy.It is related to individual. Electional astrology which is also called muhurat comes under this category.