Jyotish, Vedic Astrology, Longevity Computation.
This gives us the Arc of longevity of the Graha. Arc of Longevity = Zodiac Degrees — Deepest exaltation point. If the result is negative, then add 360º to it. Effective Arc: If the Arc of longevity is more than 180º, then reduce it by 180º. Longevity granted by that Graha = Full Pindayu * Effective