Pratyantardasha

sanskrit: प्रत्यन्तरदशा (Pratyantar Dasa)

Definition

A Pratyantardasha is the third, finest level of the Vimshottari dasha — the chain of planetary time-periods. It sits below the Mahadasha (the major period) and the Antardasha (the sub-period beneath it), so it is a sub-sub-period. Each Antardasha is divided into nine Pratyantars, one for each graha (planet) in the fixed Vimshottari order; the first belongs to the Antardasha's own lord, the rest following that order. You find its length by multiplying the Antardasha's span by each planet's Dasa years and dividing by the full Vimshottari span of 120 years.

In Tradition

Both classical and modern Jyotish (Indian astrology) texts treat the Pratyantardasha as a finer level of timing folded inside the Antardasha. Whether it reads as favourable or difficult is held to depend on all three lords at once — the conditions of the Dasa, the Antardasha, and the Pratyantar planets together. The same principles astrologers use to read an Antardasha carry over to the Pratyantardasha, sharpening the timing of a result they have already predicted.

In Practice

Astrologers use the Pratyantardasha to pin the timing of an event down to within a few months. Charak holds that when the ruling Pratyantar planet is exalted, strong, or well-placed it tends to bring good results, while a weak or afflicted one brings difficult ones; what an Antardasha promised then shows up in a fitting Pratyantardasha, shaped further by which houses the Pratyantar lord rules. In Rao's standardised method the Mahadasha lord sets the overall trend, the Antardasha lord the specific trend, and the Pratyantar lord turns that into the actual event — read alongside the planetary transits (where the planets are moving in the sky) during the Pratyantardasha. Rao notes that Parashara prescribes going finer still, into the Sookshma and Prana dashas.

Historical Origin

The Pratyantardasha is laid out in the Brihat Parashara Hora Shastra (Chapter 61), the compendium attributed to Maharshi Parashara — cited here from the Kapoor edition. Modern authors carry it forward: Rao, in Astrology, Destiny and the Wheel of Time, and Charak, in Elements of Vedic Astrology, both set it within the standardised Vimshottari timing method.

Further Reading

  • Maharshi Parasara, Brihat Parashara Hora Shastra (BPHS)
  • Rao, Astrology, Destiny and the Wheel of Time
  • Charak, Elements of Vedic Astrology