Dasha Period Calculator

The Vimshottari Dasha system is based on the Moon's exact position in a Nakshatra at the moment of birth. The Moon's Nakshatra determines which planet's Mahadasha is running at birth, and how much of that Mahadasha remains. From there, the nine planetary periods follow 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) — totaling 120 years.

The remaining balance of the birth Dasha is calculated from the Moon's exact degree within its Nakshatra. If the Moon has traversed 60% of Ashwini Nakshatra (ruled by Ketu), then 60% of Ketu's 7-year Mahadasha has already elapsed at birth, leaving 2.8 years of Ketu Mahadasha remaining. This precise calculation is critical — an error of even a few degrees in the Moon's position can shift Dasha dates by months.

Each Mahadasha is subdivided into nine Antardashas (sub-periods), one for each planet, in the same Vimshottari sequence. The Antardasha duration is proportional to the Mahadasha duration of the sub-period ruler relative to the full 120-year cycle. For example, within a 20-year Venus Mahadasha, the Venus Antardasha lasts 3 years and 4 months, while the Sun Antardasha lasts 1 year.

Kaala calculates three further levels of subdivision: Pratyantar Dasha (sub-sub-period), Sookshma Dasha (sub-sub-sub-period), and Prana Dasha (the finest level). While Mahadasha and Antardasha are the most commonly used for life predictions, the finer levels become important for timing specific events to particular months, weeks, or even days. Professional Jyotishis use Pratyantar Dasha for event timing, while Sookshma and Prana Dasha are used for Muhurta (electional astrology) and extremely precise prediction work.

A birth chart is static — it shows potential. The Dasha system makes it dynamic — it shows when. A person with an exalted Jupiter in the 10th house has potential for career success and recognition, but that potential primarily manifests during Jupiter's Mahadasha or Antardasha periods. Without Dasha timing, a birth chart reading is like having a map without knowing where you are on it.

This is why Vedic astrology excels at predictive accuracy compared to other astrological systems. When a Jyotishi says 'career advancement is likely in the next two years,' that prediction is grounded in the specific Dasha period active during that timeframe and the Dasha ruler's placement in the birth chart. Kaala's AI assistant Jyothi uses exactly this methodology — correlating your current and upcoming Dasha periods with their rulers' chart placements to generate timeline-specific predictions.

Kaala presents your Dasha timeline as an interactive visual map showing all Mahadashas across your lifespan, with the ability to drill down into Antardashas and further sub-periods for any selected range. Each period is color-coded by its ruling planet, making it easy to see the rhythm of planetary influences across your life.

The timeline highlights your current active period at every level — your current Mahadasha, Antardasha, Pratyantar Dasha, and finer sub-periods. For each period, Jyothi can provide an AI-powered interpretation explaining what the ruling planet's position in your birth chart means for that specific timeframe, covering career, relationships, health, finances, and spiritual growth.