- Astronomy
- Astronomical Basis of the Zodiac Signs
- The Great Conjunction
- The Hindu Lunisolar Calendar
- Antiquity of the Hindu Calender
- Surya Siddhantha - Diurnal and Annular Motion
- Surya Siddhantha Planetary Model
- Epicyclic Movement of Superior Planets
- Epicyclic Movement of Inferior Planets
- Uttarayana & Dakshinayana
- The Zigzag Function
