Sūrya-siddhānta
The Sūrya-siddhānta is one of the most influential Sanskrit astronomical treatises of classical India. Attributed to the ancient sage Lāṭadeva and traditionally dated to the early centuries of the Common Era, it presents a comprehensive system of planetary astronomy, calendrical computation, and mathematical procedure.
The text is organized into 14 chapters, covering topics such as the celestial sphere, planetary motions, eclipses, time-reckoning, and the mathematical methods required for astronomical calculations. Its ideas shaped the development of Indian astronomy and later influenced later traditions in South Asia and beyond.
Chapters
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