Vimshottari Dasha
If the natal chart shows the what — your tendencies, talents, challenges — then dasha shows the when. Vimshottari Dasha ("the dasha of 120") is the most-used timing system in Vedic astrology. It divides life into successive periods ruled by each of the nine planets, in a fixed sequence and with fixed lengths totalling 120 years.
This is the system most Jyotish predictions are built on.
The 120-year cycle
Each planet rules a Mahadasha — a major period — of a fixed length:
| Planet | Mahadasha length |
|---|---|
| Ketu | 7 years |
| Venus | 20 years |
| Sun | 6 years |
| Moon | 10 years |
| Mars | 7 years |
| Rahu | 18 years |
| Jupiter | 16 years |
| Saturn | 19 years |
| Mercury | 17 years |
| Total | 120 years |
The order is always Ketu → Venus → Sun → Moon → Mars → Rahu → Jupiter → Saturn → Mercury → back to Ketu. After Mercury, the cycle starts over.
Where you start in the cycle
The Mahadasha you're born into is determined by your Moon's nakshatra — the lunar mansion the Moon was occupying at birth. Each nakshatra is "owned" by one of the nine planets in a fixed assignment:
- Ashwini, Magha, Mula → Ketu
- Bharani, Purva Phalguni, Purva Ashadha → Venus
- Krittika, Uttara Phalguni, Uttara Ashadha → Sun
- Rohini, Hasta, Shravana → Moon
- Mrigashira, Chitra, Dhanishta → Mars
- Ardra, Swati, Shatabhisha → Rahu
- Punarvasu, Vishakha, Purva Bhadrapada → Jupiter
- Pushya, Anuradha, Uttara Bhadrapada → Saturn
- Ashlesha, Jyeshtha, Revati → Mercury
Your birth Mahadasha is the planet ruling your Moon's nakshatra. Furthermore, you don't start at the beginning of that Mahadasha — you start partway through, depending on how far into the nakshatra the Moon was at birth. KarmaWheel does this calculation precisely down to the day.
Three (or more) levels deep
A Mahadasha is too coarse for fine timing. So each Mahadasha is divided into nine Antardashas (sub-periods), one for each planet, in the same Ketu→Venus→Sun→… sequence as the Mahadasha cycle. The Antardasha sub-periods are proportional to the Mahadasha lengths.
Each Antardasha is then divided into nine Pratyantar dashas, and so on, theoretically down to days (Sukshma) and moments (Prana). KarmaWheel computes three levels by default — Mahadasha, Antardasha, Pratyantar — which is sufficient for almost all timing work.
You read your dasha as "Maha lord / Antar lord / Pratyantar lord" — for example "Rahu Maha · Saturn Antar · Jupiter Pratyantar" describes a Saturn-flavored period within a Rahu major period, with a small Jupiter sub-flavor at this exact week.
How to read a dasha period
Each lord brings its themes to the period. To predict what a period is likely to bring, examine the Mahadasha lord:
- Where does it sit in the chart? A planet in its own sign or exalted gives a strong, fortunate Mahadasha. Debilitated gives challenges.
- What house does it occupy? A planet in the 11th brings gains; in the 6th brings work and conflict; in the 7th brings marriage themes.
- What does it rule? The houses owned by the planet are the houses whose themes get activated. A planet that owns the 7th will trigger marriage events during its dasha.
- What does it aspect? Aspects to other houses bring those house-themes into play.
- What sub-period (Antardasha) is running? The Antardasha lord modifies and refines the Mahadasha.
A complete reading combines all five elements. KarmaWheel surfaces this for you automatically — open the Dasha Strip card on any chart and you'll see colored bands showing each Mahadasha and Antardasha, with the current period bordered in gold.
Sub-periods and event timing
Specific events tend to occur during sub-periods (Antardashas and Pratyantars) where:
- The Antardasha lord is functionally connected to the event house (own-sign placement, occupies the house, or aspects the house lord)
- The Mahadasha + Antardasha lords are friendly to each other — friendly combinations bring smooth events; enemy combinations bring conflict and abrupt change
- A relevant transit confirms the period (e.g., transiting Jupiter aspecting the 7th house during a 7th-lord Antardasha is a strong marriage signal)
The combination of dasha + transit + chart is the classical basis for prediction.
The Dasha Strip in KarmaWheel
KarmaWheel's Dasha Strip is a colored ribbon laid across decades, showing each Mahadasha as a band sized to its length, color-coded by the planet's natural quality. A live "you are here" marker shows your current position. Click any Mahadasha to expand and see its Antardashas and Pratyantar dashas.
This makes it easy to see, at a glance:
- What major period you're in now
- When the next major shift is coming
- How long each period lasts
- Patterns across the lifetime (e.g., "I had Rahu Maha during my 20s and Jupiter Maha during my 30s")
For deep predictive work, also look at the Dasha Timeline (in Features menu) — a sortable list of every Mahadasha + Antardasha period of your life with start/end dates.
Other dasha systems
While Vimshottari is dominant, KarmaWheel also calculates:
- Yogini Dasha — eight-fold lunar dasha system, faster cycle (36 years)
- Chara Dasha — Jaimini sign-based dasha, very different logic
- Mudda Dasha — annual sub-system inside the Varshaphal chart
These appear as additional tabs on the dasha card. See the other dasha systems article for details on those.
Related articles
- The 27 Nakshatras — your Moon's nakshatra drives Vimshottari
- Sade Sati: Saturn through the Moon — a Saturn-specific timing technique
- Transits and How to Read Them — combining dasha with transits
- How to Read a Chart Step by Step