138 



On the Principles of 





P. 



TIT" 







u 







oo 





31 



10 





^ i 







Q 1 





T7" — 



OA 





rr\ i — > 



OA 



U 













50 





28 



38 





28 



50 





29 



22 



In tliis table, the length of the day at the time of the 

 Sun's entering into each of the 12 Rasies is given; the dif- 

 ference between this and 60 pasyas being the length of the 

 night. The length of the day or night in any day interven- 

 ing between any two days given in the table is more or less 

 in proportion. This table is, however, constructed upon the 

 principle that the Sun always sets first at the point in the 

 Masi-chakkra (i zodiac" opposite to his position when he rises 

 in the eastern horizon. But as the Sun progresses about one- 

 sixtieth part of a Rasi from the time of his rising to that of 

 his setting, and as the seventh Rasi, by which he always sets, 

 is never equal in size to that by which he rises, there is 

 always a difference of about 5 winadies ; consequently, the 

 length of day or night given in the table occurs always 

 about 20 days previous to that given in it. 



The six months from the Sun's entering into Kataka is 

 termed Daksliina-Ayana " Southern course," and the other 

 six months from his entering into Makara, is called Uttara- 

 Ayana " Northern course," because during these months the 

 Sun seems to travel towards these directions. 



