[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) › c22.24 # Book of Indian Eras, with Tables for Calculating Indian Dates c22.24 Book of Indian Eras, with Tables for Calculating Indian Dates c22.24 - **Language:** English ### [c22.24](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c22.24) The calculation of this table is based on the fact that as the cycle consists of 30 years, the whole series of week day changes will be exhausted in each period of 30 × 7 = 210 years. Thus the year 1 A.H. having begun on a Friday, the following years would also begin on Friday:— - [Previous: c22.23](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c22.23) - [Next: c22.25](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c22.25) - [Up: c22](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c22) --- Source: [https://indike.org/pramana/ins.epigraphy.cunningham-1883.c22.24](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c22.24) · Pramāṇa