The Pancha Siddhantika, authored by the illustrious Varahamihira in the 6th century CE, serves as a monumental synthesis of five prominent astronomical traditions of ancient India. This work not only consolidates earlier astronomical knowledge but also reflects the dynamic evolution of observational and computational astronomy as it was practiced during the classical period of Indian science. The five siddhantas covered in the text—Surya Siddhanta, Paulisha Siddhanta, Romaka Siddhanta, Vasishtha Siddhanta, and Paitamaha Siddhanta—represent diverse strands of astronomical thought, ranging from purely indigenous Indian models to influences from Hellenistic and Babylonian traditions. Surya Siddhanta, considered the most celebrated among these, exemplifies the precision-oriented and methodical approach of Indian astronomers. Its rules for calculating planetary positions, eclipses, and mean motions illustrate a sophisticated understanding of celestial mechanics, long before similar methods were codified in the Western world. The text presents a framework where planetary motions are mathematically modeled using mean motions, epicycles, and eccentric circles. Varahamihira’s exposition in the Pancha Siddhantika not only preserves these methods but also critiques and refines them, showing an advanced level of critical engagement with prior sources. The Surya Siddhanta’s attention to timekeeping, division of the day, and luni-solar calculations highlights the significance of astronomical observations in ritual, calendrical, and astrological contexts, reflecting a holistic integration of theory and practice. The Paulisha Siddhanta, often linked with Babylonian and Hellenistic influence, demonstrates how ancient Indian scholars were receptive to foreign astronomical ideas while adapting them to local frameworks. It introduces concepts such as planetary periods and longitudes, which are harmonized with Indian calendrical requirements. The inclusion of Paulisha calculations