Hence the number of mean solar days corresponding to the desired grahadeha (1-1/70) xgrahadeha days - (2/5)×(grahadeha) vighatikās. Consequently, the mean longitude of the Sun, Mercury, or Venus (1-1/70) × (grahadeha) degrees Rationale II. The mean SIMPLIFIED RULES - Hence the rule. - (2/5)×(grahadeha) seconds. - daily motion of the Sun 4320000 1577917500 of a revolution 4320000 x 12 x 30 1577917500 of a degree (1-3029/210389) of a degree (1-1/70) of a degree (1-1/70) of a degree - 1641 x 60×60 210389 × 70 of a second 2/5 of a second approx. 23 A rule for finding the mean longitude of the Moon : 32. Multiply the grahatanu for the Moon by 83 (lit. 92 + 2) and divide by 225; the result is in terms of degrees, etc. From that subtract the seconds obtained by multiplying the grahatanu by 11 and dividing by 50. (Then add the remainder to thirteen times the mean longitude of the Sun as prescribed in stanza 35 below : the sum thus obtained is the mean longitude of the Moon). ¹ ¹ Similar rules occur in SiDV, I, i. 40-41; MSi, i. 43(i); KPr, i. 5; GL, i. 10 (ii); KKu, i. 8; KKau, i. 17; and SK, i. 6(ii). Sā, i. 106;
