Vimshottari dasha explained: mahadasha, antardasha and how to read yours
Ask an astrologer what your chart says about the next few years, and the answer will come from your dasha. Here is how the Vimshottari system is calculated, from the Moon at birth to the antardasha you are in today.
A birth chart is a single moment. The dasha system is how Jyotish turns that moment into a timeline: which planet's themes are in the foreground for which years of your life. Of the many dasha systems, Vimshottari is the one used almost everywhere, and the one most predictions are timed by.
A cycle of 120 years
Vimshottari means "of 120". The nine grahas each rule one period, the mahadasha, of a fixed length, and together they add up to 120 years:
| Mahadasha | Years |
|---|---|
| Ketu | 7 |
| Venus | 20 |
| Sun | 6 |
| Moon | 10 |
| Mars | 7 |
| Rahu | 18 |
| Jupiter | 16 |
| Saturn | 19 |
| Mercury | 17 |
They always come in this order, and after Mercury the cycle returns to Ketu.
Where yours starts
Your first mahadasha is set by your Moon's nakshatra at birth. Each of the 27 nakshatras has a ruling planet (see what a nakshatra is), and you are born into that planet's dasha.
You are usually born part-way through it. If the Moon had already crossed 40% of its nakshatra, then 40% of that dasha has already gone, and you live only the remaining 60%. This balance at birth is why two people born on the same day, hours apart, can start in the same dasha with very different years left, and why the Moon's exact degree matters so much.
After the first, every mahadasha runs its full length.
Antardashas: the chapters inside
Each mahadasha divides into nine antardashas (sub-periods), one for each graha, starting with the mahadasha's own lord and following the same order. Each one's share is in proportion to its years in the table.
The formula is simple: mahadasha years × antardasha lord's years ÷ 120.
A worked example, the 17-year Mercury mahadasha:
- Mercury–Mercury: 17 × 17 ÷ 120 = 2.41 years (about 2 years 5 months)
- Mercury–Ketu: 17 × 7 ÷ 120 = 0.99 years (about a year)
- Mercury–Venus: 17 × 20 ÷ 120 = 2.83 years (about 2 years 10 months)
…and so on through all nine, until the nine add back up to 17 years.
Astrologers read the two together: the mahadasha sets the season, and the antardasha decides which part of it is active now. Mercury–Venus reads differently from Mercury–Saturn, even inside the same mahadasha.
How a dasha is read
A planet's period brings out what that planet stands for in your chart: the houses it rules, the house it sits in, and its strength there. Jupiter's dasha is not automatically good, and Saturn's is not automatically hard. A well-placed Saturn often gives its best results in its own period.
Broadly, each graha's mahadasha is associated with:
- Sun: authority, recognition, the father
- Moon: feelings, home, the mother
- Mars: drive, property, courage
- Mercury: study, trade, communication
- Jupiter: growth, teaching, children
- Venus: partnership, comfort, art and money
- Saturn: work, discipline, slow and lasting gains
- Rahu: ambition, the unfamiliar, sudden turns
- Ketu: detachment, endings, inner work
Seeing your own
Our free kundali works out your full Vimshottari timeline from your birth details. Open the Dasha tab to see every mahadasha with its dates; tap any of them to open its nine antardashas, with the one running now highlighted.
Long transits like Sade Sati are read on top of the dasha, never instead of it.