Jyotish, Vedic Astrology, Longevity Computation.
longitudes into Degrees by converting the arc minutes and arc seconds to degrees (in decimals). For instance 20º 3' 40" = 20.061º. Longitude = Degrees + Minutes / 60 + Seconds / 3600. Arc of Longevity: Deduct the longitude of the deepest exaltation points of these planets from their Zodiac Degrees.