[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) › c5.6 # Book of Indian Eras, with Tables for Calculating Indian Dates c5.6 Book of Indian Eras, with Tables for Calculating Indian Dates c5.6 - **Language:** English ### [c5.6](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c5.6) This intercalary, or thirteenth month, is very plainly alluded to in the Rig Veda,\* where Varuna is said to know the 12 months, "and that which is supplementarily engendered," or, as Dr. Max Müller has it: "He knews the 12 months with their offspring, and knows the month which is produced in addition."† - [Previous: c5.5](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c5.5) - [Next: c5.7](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c5.7) - [Up: c5](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c5) ## Linked texts (1) - [Ṛgvedasaṃhitā](https://indike.org/pramana/in.veda.samhita.rg) — Sanskrit --- Source: [https://indike.org/pramana/ins.epigraphy.cunningham-1883.c5.6](https://indike.org/pramana/ins.epigraphy.cunningham-1883.c5.6) · Pramāṇa