The samvatsar of the birth of the querist will be the same as that of the rasi in the Dwadasamsa in which the Prasna Lagna falls. (It means that Jupiter will be in that rasi at birth). Saumyayana (Uttarayana the northern course of the Sun) will be in the first Hora of the Lagna (Ascendant of the query chart) and Yamyayana (Dakshinayana — the southern course of the Sun) will be in its second Hora. The ritu (season) may be determined with reference to the lord of the Drekkana in which the Lagna falls. Shishir ritu will be indicated by the Drekkana of Saturn, grishma by that of the Sun and Mars, Vasanta ritu by that of Venus, varsha ritu by that of the Moon, Sharad ritu by that of Mercury, Hemanta ritu by that of Jupiter.

ऋतुर्लग्नदृकाणर्क्षस्वामिभिः शिशिरादयः । शनिशुक्रकुजेन्दुज्ञजीवैर्ग्रीष्मस्तु भानुना । ।6।। प्रश्नलग्न में जिस राशि का द्रेष्काण हो, उस द्रेष्काणेश से शिशिरादि ऋतु जाननी चाहिए । शनि का द्रेष्काण हो तो शिशिर, शुक्र से वसन्त, मंगल से ग्रीष्म, चन्द्र से वर्षा, बुध से शरद, गुरु से हेमन्त तथा सूर्य से ग्रीष्म ही समझनी चाहिए ।