TheRomaka Siddhanta (Sanskrit:रोमकसिद्धान्त,romanized: Romaka Siddhānta), literally "The Doctrine of the Romans", is one of the fivesiddhantas (doctrine or tradition) mentioned inVarahamihira'sPanchasiddhantika which is an Indian astronomical treatise.
Romaka Siddhanta is based on the astronomical learning of theByzantine Empire, also referred to as the Eastern Roman Empire.[1][2]
It follows theYavanajataka ("Natal Astrology of the Yavana (Greek)") as an example of the transmission ofGreek and Roman astronomical knowledge (especially theAlexandrian school) to India during the first centuries of our era.[clarification needed]
It is the only one of all Indian astronomical works which is based on thetropical system. It was considered one of "The Five Astronomical Canons" in India in the 5th century.
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