Vimshottari Dasha Calculator

The zodiac is divided into twenty-seven nakshatras of 13°20′ each, and the nine planets of the cycle rule them in a repeating order of three rounds. The nakshatra the Moon occupies at birth therefore names the first Mahadasha. A Moon in Ashwini, Magha or Mula starts with Ketu; a Moon in Bharani, Purva Phalguni or Purva Ashadha starts with Venus, and so on through the list. Because the Moon moves quickly, about one nakshatra a day, the birth time matters more here than it does for the signs of the slower planets.

The cycle gives each of the nine grahas a fixed number of years: Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19 and Mercury 17, for a total of 120. The order never changes. Where a person starts in the cycle depends on the nakshatra the Moon occupies at birth, because each nakshatra is ruled by one of these planets.

Only part of the first period remains at birth. The share left depends on how far the Moon has travelled through its nakshatra, and this is shown as the balance of dasha at birth. From then on, each Mahadasha follows the next in order.

Each Mahadasha is divided into nine Antardashas in the same planetary order, starting with the lord of the Mahadasha itself. Each Antardasha divides again into nine Pratyantardashas. The length of every sub-period is in proportion to the years of its planet, so a Venus sub-period is always the longest and a Sun sub-period the shortest.

Choose how much detail you want with the detail menu. The current period, if it falls in the range, is labelled with the word Current so you do not need to rely on colour. Dates are shown in the time zone of the birth place.

The Moon's position is sidereal with the Lahiri ayanamsa. Dasha years are counted as 365.25 days. Some software uses a different year length, such as a sidereal year or a 360-day year, so period dates can differ from other sources by days or, over a long span, by weeks.

Detail goes down to three levels: Mahadasha, Antardasha and Pratyantardasha. Deeper levels are not offered here, because their dates depend heavily on an exact birth time. These results have not yet been checked against published reference charts.