[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Jyotihshastra: Astral and Mathematical Literature](https://indike.org/pramana/ins.science.pingree-1981) › c4.s7.17 # Jyotihshastra: Astral and Mathematical Literature c4.s7.17 Jyotiḥśāstra: Astral and Mathematical Literature c4.s7.17 - **Language:** English ### [c4.s7.17](https://indike.org/pramana/ins.science.pingree-1981.c4.s7.17) In about 1600 one Bābā,³⁰¹ the son of Rāma and the younger brother of Śiva, wrote a Pañcāngasiddhi³⁰² in which he gives annual increments for tithis, nakṣatras, yogas, and the week-days on which sidereal years begin for a period of 90 years. - [Previous: c4.s7.16](https://indike.org/pramana/ins.science.pingree-1981.c4.s7.16) - [Next: c4.s7.18](https://indike.org/pramana/ins.science.pingree-1981.c4.s7.18) - [Up: c4.s7](https://indike.org/pramana/ins.science.pingree-1981.c4.s7) --- Source: [https://indike.org/pramana/ins.science.pingree-1981.c4.s7.17](https://indike.org/pramana/ins.science.pingree-1981.c4.s7.17) · Pramāṇa