[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Archaeology, epigraphy and coins](https://indike.org/pramana/ins.epigraphy) › [Book of Indian Eras, with Tables for Calculating Indian Dates](https://indike.org/pramana/ins.epigraphy.cunningham-1883) › c18.20 # Book of Indian Eras, with Tables for Calculating Indian Dates c18.20 Book of Indian Eras, with Tables for Calculating Indian Dates c18.20 - **Language:** English ### [c18.20](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c18.20) In A.D. 331, the Hindu luni-solar year began on the 23rd February, according to Cowasjee Patell, who, throughout his chronology, has used the tables of Aryabhatta. In this year the month of Bhâdrapada was intercalary; but as this month is later than Ashâdha, the date will not be affected by the intercalation. Now the 12th of Ashâdha-Sudi is the 101st day of the Hindu luni-solar year; and as the 23rd of February was a Tuesday, the 101st day was a Thursday in A.D. 331, according to Aryabhatta’s tables. But according to Varâha Mihira, the Hindu luni-solar year began one day later, on the 24th February, and consequently the 101st day would be Friday, 4th June. - [Previous: c18.19](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c18.19) - [Next: c18.21](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c18.21) - [Up: c18](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c18) ## Linked texts (2) - [Sūryasiddhānta](https://indike.org/pramana/in.astro.siddhanta.early.suryasiddhanta) — Maya, Sanskrit - [Āryabhaṭīya](https://indike.org/pramana/in.astro.siddhanta.early.aryabhatiya) — Āryabhaṭa, Sanskrit --- Source: [https://indike.org/pramana/ins.epigraphy.cunningham-1883.c18.20](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c18.20) · Pramāṇa