Vimsottari Dasa is the most important Dasa of Vedic astrology.
This Dasa is extensively described in Parasara Hora Shastra and is called the supreme Dasa of Vedic astrology (together with Kalachakra).
It is a strange fact that some supreme classical texts (Saravali, Brihat Jataka) do not mention this Dasa at all.
Vimsottari is a Nakshatra Dasa that is based upon the position of the Moon in her Lunar mansion. Each Nakshatra has a planet (or Node) as its lord. There are in total 9 lords.
Each of the lords has a fixed period of influence. The total period is of 120 years. Calculation of Dasa balance is described in the chapter above.
The basic rules for this Dasa are given in the next table.
|Dasa Lord||Duration (Years)||Nakshatras|
|Sun||6||3, 12, 21|
|Moon||10||4, 13, 22|
|Mars||7||5, 14, 23|
|Rahu||18||6, 15, 24|
|Jupiter||16||7, 16, 25|
|Saturn||19||8, 17, 26|
|Mercury||17||9, 18, 27|
|Ketu||7||1, 10, 19|
|Venus||20||2, 11, 20|
Antardasas are calculated according to the proportional values of the lords. Antardasas begin with the lord of the major Dasa. Each lord has a propotional time of influence.
Example: The Moon's Dasa is of 10 years. Each Antardasa contributes the same proportional value as indicated by the portion of the Mahadasas.
So Moon/Moon will be of 10 * 10/120 years = 10 months.
Moon/Mars will be of 10 * 7/120 years = 0 years 7 months, etc.
Each Dasa has several influences