Book of Indian Eras, with Tables for Calculating Indian Dates c2.25

c2.25

Colonel Warren, who belonged to the French family of De Warenne, was one of the officers of the Great Trigonometrical Survey. His work gives an elaborate exposition of the Hindu solar and luni-solar measures of time with an account of the Vrihaspati Chakra, or Jupiter cycle of sixty years, and a memoir on the lunar year of the Muhammadans. At the end he has given a series of very useful tables for facilitating the computation of Indian dates. The Kâla Sankâlita is valuable for its accuracy, but its Tables are rather cumbrous and troublesome for any large number of calculations. My own Hindu Tables are simpler and easier to work with than Warren's, but they are essentially the same, and were, in fact, based upon his elaborate and more cumbrous processes.