Vimshottari Dasha Calculator
Calculate your active Vimshottari Mahadasha, Antardasha (Bhukti), and Pratyantardasha periods from your birth details with Thirukanitha precision.
- 120-year cycle
- Lahiri Chitrapaksha
- Thirukanitha · Drik
- Engine computes
Calculate Your Dasha & Bhukti
Enter birth date, time, and place to calculate active periods.
Method
The Classical 120-Year Vimshottari Cycle
Under the classical Parashari system, the human lifespan is mapped across a 120-year planetary cycle. The nine grahas govern in a fixed sequence: Ketu (7 years), Venus (20 years), Sun (6 years), Moon (10 years), Mars (7 years), Rahu (18 years), Jupiter (16 years), Saturn (19 years), and Mercury (17 years).
The 27 nakshatras are divided equally among the 9 planets (3 nakshatras per planet). A native born with the Moon in Ashwini, Magha, or Moola starts life in Ketu Mahadasha, while Bharani, Purva Phalguni, or Purva Ashadha begins in Venus Mahadasha.
Method
How Janma Dasha Balance Is Mathematically Derived
Each Nakshatra spans exactly 13°20' (800 arcminutes). The Moon's longitude at the exact minute of birth determines how much of the star has elapsed. The remaining unelapsed arc directly yields the birth balance of the starting Mahadasha in years, months, and days.
Formula: Balance Dasha = ((800' - Traversed Arc) / 800') * Total Mahadasha Years. AstroYogam's high-precision Drik engine solves this crossing with astronomical accuracy.
Method
Antardasha (Bhukti) Sub-period Calculation Rule
Within each Mahadasha, all nine planets operate as sub-periods known as Antardashas or Bhuktis. The classical formula to calculate the duration of any Bhukti is: (Mahadasha Years * Antardasha Lord Years) / 120 years.
For instance, in Rahu Mahadasha (18 years), Jupiter Bhukti (16 years) spans (18 * 16) / 120 = 2.4 years (2 years, 4 months, and 24 days). Pratyantardashas further subdivide each Bhukti using the identical proportional rule.
Method
Dasha vs Gochara: Internal Karmic Climate vs Transit Triggers
Classical Vedic astrology teaches that Dasha and Bhukti determine the internal karmic climate - the fertile ground and psychological readiness of the individual. Planetary transits (Gochara), such as Saturn or Jupiter moving through rasis, act as clock hands triggering tangible events.
FAQ