Pancha Siddhantika (पंच सिद्धांतिका) is a 6th-century CE Sanskrit–language text written by astrologer-astronomer Varāhamihira in present-day Ujjain, India. It summarizes the contents of the treatises of…
The Surya Siddhanta (सूर्य सिद्धांत) is a Sanskrit treatise in Indian astronomy dated to the 4th to 5th century, in fourteen chapters. This Siddhanta describes rules to…