[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [The Astronomical Observatories of Jai Singh](https://indike.org/pramana/ins.science.kaye-1918) › c5.5 # The Astronomical Observatories of Jai Singh c5.5 The Astronomical Observatories of Jai Singh c5.5 - **Language:** English ### [c5.5](https://indike.org/pramana/ins.science.kaye-1918.c5.5) ² A.H. 841=A.D. 1437-8; A.H. 1138=A.D. 1725-6; and 297 Muslim years=288·2 Christian years. \[622 - A. H./100 = A.D. - A.H.\] - [Previous: c5.4](https://indike.org/pramana/ins.science.kaye-1918.c5.4) - [Next: c5.6](https://indike.org/pramana/ins.science.kaye-1918.c5.6) - [Up: c5](https://indike.org/pramana/ins.science.kaye-1918.c5) --- Source: [https://indike.org/pramana/ins.science.kaye-1918.c5.5](https://indike.org/pramana/ins.science.kaye-1918.c5.5) · Pramāṇa