[ 48 ] the rate of 60 seconds a year, making the amount 16°37' in Saka 1442. It remains to notice the date 421 Sáka given by some minor authors. This is obviously based upon the Súrya-Siddhánta's rule, with its annual rate of 54", making 20° 55' as the amount of present ayanámsa. Chandras ekhara has not recorded the data which furnished him the rate. Knowing, however, his ayanáns a and rate, and calculating backwards, we arrive at Saka 415. So far we have obtained the following figures :- Muñjála 425 Saka 56"828 per year Sátánanda 437 57.295 Bhaskara 423 56.624 Chandrasekhara 415 57.013 Mean 425 w 57"-09 Haring regard to the nature of the data we cannot expect a closer approximation than that shewn above. We may therefore fairly take the mean of the dates, as well as the rates. On account of obvious inaccuracy in the data of Gayesa, the date and rate obtained from him cannot be rightly included. Neither will his date, if corrected, increase the weight to be attached to the mean to be calculated from the above figures. We might, however, include the date 421 S'aka given by certain writers. Indeed, it will be seen that the dates of the starting year are of two classes ; one, somewhere near 450 S'aka, and the other, 421 Saka. But the dates of the former class may be reduced to those of the latter class. It will be further observed that Muñjála, Digitized by Google
