सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

43 days L. These again multiplied by the number of Adhika- masas in a Kalpa and divided by the tithis in a Kalpa gives the elapsed number of Adhikamāsas. Multiplying this number by thirty and subtracting from the above lunar days L, we have the elapsed solar days. Dividing these by thirty, we have the number of elapsed solar months, the remainder being solar days. Dividing the solar months by 12, we have the elapsed solar years and the remainder here are the solar months. Thus we have the solar years, solar months and solar days corresponding to the given Ahargaṇa. Comm. The inverse process detailed here is quite clear. Verse 18. Computation of the Ahargaṇa and the planetary positions from the beginning of the Kaliyuga. Find the Ahargaṇa from the beginning of the Kaliyuga either (according to the method described formerly with respect to a Kalpa) and this Ahargaṇa begins from Friday, Computing the mean planetary positions from this Āhar- gaṇa and adding to their mean positions at the beginning of the Kali which are known as Dhruvakas, we have their planetary positions for the day concerned. Verses 19, 20. The Dhruvakas of the planetary posi- tions at the beginning of Kali, given in a tabular form.

Mars	Mercury	Jupiter	Venus	Saturn	Solar Apogee	Lunar Apogee	Ascending lunar node
11 R	11 R	11 R	11 R	11 R	2 R	4 R	5 R	Rasis
29°	27°	29°	28°	28°	17°	5°	3°	Degrees
3'	24'	27'	42'	46'	45'	29'	12'	minutes
50"	29"	36"	14"	34"	36"	46"	58"	Seconds