196 



Dr. G. Thibaut — On the Suryaprajnapti. 



[No. 4, 



of fcithis of one parvan) and from the product deduct the number of avama- 

 ratras (excessive lunar days) which occur during the period in question. 

 If the parvan occurs during the first ayana of the sun, the I'emainder im- 

 mediately indicates the number of the solar circle which is in fact the same 

 as the number of the civil day on which the parvan happens ; if the par- 

 van takes place during one of the other nine ayanas, the remainder must 

 at first be divided by 183 (number of circles described by the sun during 

 one ayana) ; etc. The rule is simple and needs no illustration. 



The rule for finding the nakshatra in which the sun stands at the time 

 of each parvan (the siiryanakshatra) is quite analogous to the rule given 



above for the moon. The sun makes in one yuga five complete revolutions, 

 5 



in one parvan -— — revolutions. This quantity is to be multiplied by the 



number of the parvan and then we have as above to descend by continued 

 multiplication and division to nakshatras, sixty-second parts of nakshatras 

 and sixty-seventh parts of sixty-second parts. Instead of deducting the 

 portion belonging to Abhijit at the beginning of which the moon stands 

 on the first day of the yuga, we have to deduct that part of Pushya which 

 the sun has not yet passed through at the beginning of the yuga ; it 

 44 



amounts to — of a nychthemeron. All the remainder of the calculation is 



the same as in the moon's case and illustrative examples are therefore not 

 wanted. 



Besides there is another and considerably simpler method for finding 

 the sun's place at the end of a parvan ; it is likewise contained in some old 

 karana-gathas. The rule again assumes a " dhruvarasi", a constant quan- 



2 



tity, to be used in all calculations of this kind. This quantity is 33 -)- — 

 34 



-j muhiirtas : for if we divide the whole circle of the nakshatras 



62 X 67 



27 



into 819 ~ muhiirtas (which is the time occupied by a complete revolution 



of the moon) the above amount expresses the way the sun accomplishes 

 during one parvan. This quantity has therefore to be multiplied by the 

 number of the parvan required, and by subtracting from the product at first 

 43 33 



the 19 + — 4 z muhurtas belonging to Pushya, after that the 



62 67 X 62 



15 muhurtas of Aslesha, after that the 30 muhurtas of Magha etc., we find 

 in the end the nakshatra in which the san completes the parvan. In order 

 to facilitate these somewhat lengthy subtractions, the muhurtas of a cer- 

 tain number of nakshatras are again added and presented in a tabular form. 

 So for instance 139 muhurtas (19 + 15 + 30 + 3U -|- 45) lead us up to 



