Jyotish, Vedic Astrology, Longevity Computation.
allocation of years to the Grahas in exaltation. The computation involves calculation of the Base Aayu, and then applying the reductions (Harana) viz., Astangata, Shatrukshetra, Chakrapata and Krurodaya. Full Longevity of the Grahas when they occupy their highest exaltation (Full Nisargayu) Surya: