THE surya' siddha'nta, &c. 573 



65. From the position and motion of the Moon, 

 we obtain 759 years, for the age of the Surya Sidd- 

 hanta : as in the following operation : 



4900 — 759 = 4] 41 Cali yug. 



Moon's mean longitude at the end of the year 4l4i 



of the Cali yug : 



By the 'Surya ciiaa/ianta= — ^ysocoo — 



= 55360 revs. - - 3s. 23.41' 52" 48'" 



By De LA Lande's tables at the 

 end of the year 49OO of the Ca- 

 ll yug, Hindu sphere, (§12) = 3^- 2» 2' 40" 48'" 



Deduct motion for 759 Hindu 



years and sphere - =11 8 27 45 16 



Mean longitude at the end of 



4141 of the Cali yug = 3 23 34 55 32 



Add inequality in Moon's motion, 



per formula for 660 years = 7 52 24,7 



Correct mean longitude = 3 23 42 47 56,7 



Deduct inequality in Sun's mo- 

 tion per formula, for 710 yrs = 54 38,7 



Moon's correct mean longitude, 



Hindu sphere - - = 3 23 4 1 53 17,9 



agreeing with the Surya Sidd- 



hanta within half a second, or 29,9 



Or the operation may be as follows, in the Euro- 

 pean sphere. 



Moon's mean longitude at the end of the year 4900 

 of the Cali yug : — 



ByDE laLande's tables, Eur. 



sphere, (§11) - - = 3«-22°55' 9"18"' 



Deduct motion for 759 Hindu 



years, but £?/7'o/>6'«7i sphere = 11 20 49 56 25,77 

 Mean longitude at the end of 



the year 4141 of the C«//j/zf«- 4 2 5 12 52,2 

 Add inequality per formula for 



660 years - = 7 52 24,7 



2 3 Correct 



