Loading...
Loading...
The timing system that unfolds destiny through a 120-year planetary cycle
A Dasha is a planetary period — a span of time ruled by a specific Graha. The Vimshottari Dasha system ("Dasha of 120") is the most widely used timing system in Vedic astrology. It divides an entire lifetime into major periods (Maha Dasha), each governed by one of the nine Grahas. The sequence and starting point are determined by the Moon's Nakshatra at birth.
The concept is rooted in Parashari Jyotish: each planet "rules" certain years of your life, activating the houses it owns and occupies in your birth chart. During a planet's Dasha, that planet becomes the primary driver of events — its strength, placement, and associations colour everything from career to health to relationships.
The nine Maha Dashas follow a fixed sequence, each lasting a specific number of years. The total cycle spans 120 years. The sequence follows the Nakshatra lords in Vimshottari order: Ketu (7) → Venus (20) → Sun (6) → Moon (10) → Mars (7) → Rahu (18) → Jupiter (16) → Saturn (19) → Mercury (17).
Why 120 years? Parashari texts define a full human lifespan as 120 years (Param Ayush). The number has mathematical elegance — it allows clean fractional division across 9 planets for sub-period calculations. The system is prescribed for all charts where the Moon is strong; when the Moon is weak (e.g., in the 6th/8th house or heavily afflicted), some astrologers prefer alternative systems.
Each of the 27 Nakshatras is ruled by one of the 9 Dasha planets. The 27 Nakshatras are divided into 3 groups of 9, and each group cycles through the same sequence: Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury. Your birth Nakshatra's ruler determines which Maha Dasha is running at birth.
| Planet | Years | Ruling Nakshatras (1-9) | (10-18) | (19-27) |
|---|---|---|---|---|
| Ketu | 7 | Ashwini | Magha | Moola |
| Venus | 20 | Bharani | P.Phalguni | P.Ashadha |
| Sun | 6 | Krittika | U.Phalguni | U.Ashadha |
| Moon | 10 | Rohini | Hasta | Shravana |
| Mars | 7 | Mrigashira | Chitra | Dhanishta |
| Rahu | 18 | Ardra | Swati | Shatabhisha |
| Jupiter | 16 | Punarvasu | Vishakha | P.Bhadra |
| Saturn | 19 | Pushya | Anuradha | U.Bhadra |
| Mercury | 17 | Ashlesha | Jyeshtha | Revati |
Your Dasha starting point depends on the Moon's exact position in its Nakshatra at birth. The Nakshatra lord determines which Dasha you're born into, and the Moon's progress through that Nakshatra determines how much of that Dasha remains.
Step-by-Step Calculation:
1. Find Moon's Nakshatra at birth (e.g., Pushya)
2. Nakshatra lord = Dasha lord at birth (Pushya lord = Saturn)
3. Moon's progress through Nakshatra = elapsed portion of Dasha
Example: Moon at 10° in Pushya (3°20' to 16°40')
Progress = (10° - 3.333°) / 13.333° = 50%
Remaining Saturn Dasha = 19 × (1 - 0.50) = 9.5 years
Let us walk through a complete example. Suppose someone is born with Moon at 14 degrees 30 minutes in Aries.
Given: Moon at 14°30' Aries (Mesha)
Step 1: Identify Nakshatra
14°30' Aries falls in Bharani (13°20' - 26°40' Aries)
Step 2: Nakshatra lord
Bharani lord = Venus → Birth Dasha = Venus Maha Dasha
Step 3: Calculate progress through Nakshatra
Moon position within Bharani = 14°30' - 13°20' = 1°10' = 1.167°
Nakshatra span = 13°20' = 13.333°
Progress = 1.167 / 13.333 = 8.75% elapsed
Step 4: Calculate remaining Dasha
Venus total = 20 years
Remaining = 20 × (1 - 0.0875) = 18.25 years = 18 years 3 months
Step 5: Sequence after Venus
Venus (18y 3m remaining) → Sun (6y) → Moon (10y) → Mars (7y) → Rahu (18y) → Jupiter (16y) → Saturn (19y) → Mercury (17y) → Ketu (7y)
Each Maha Dasha is subdivided into 9 Antardashas (sub-periods), which follow the same Vimshottari sequence starting from the Maha Dasha lord. Each Antardasha is further divided into 9 Pratyantardashas, and so on for even finer timing (Sookshma, Prana). Our software calculates down to the Antardasha level.
The hierarchy of precision: Maha Dasha (years) → Antardasha (months) → Pratyantardasha (weeks) → Sookshma Dasha (days) → Prana Dasha (hours). For most practical predictions, the Maha Dasha and Antardasha combination is sufficient. The Pratyantardasha is used for precise event timing — pinpointing the exact month or week when something manifests.
Antardasha Duration Formula:
Antardasha of B in Maha Dasha of A = (Years_A x Years_B) / 120
Example: Mercury Antardasha in Saturn Maha Dasha = (19 x 17) / 120 = 2.69 years ~ 2 yrs 8 months 9 days
While Vimshottari is the most widely used, Jyotish texts describe over 40 dasha systems. Each has specific conditions when it is most appropriate:
Uses 8 Yoginis (Mangala, Pingala, Dhanya, Bhramari, Bhadrika, Ulka, Siddha, Sankata) mapped to planets. Shorter cycle makes it effective for quick-results timing. Popular in North India.
A 108-year cycle using 8 planets (Ketu excluded). Prescribed when Rahu is in a Kendra or Trikona from Lagna lord, or when birth is during Krishna Paksha daytime or Shukla Paksha nighttime.
A sign-based (rashi) dasha from Jaimini system. Each sign runs for a period determined by its lord's distance from it. Uses Chara Karakas (variable significators) instead of fixed planetary rulers. Powerful for career and relationship timing.
An extremely complex sign-based dasha that moves in a serpentine (savya/apsavya) pattern through the zodiac. Considered highly accurate by scholars but difficult to compute manually. Based on the Moon's Navamsa position.
A Dasha period activates the planet's significations based on its placement in your chart. The results depend on: (1) Which houses the Dasha lord owns, (2) Which house it occupies, (3) Which planets it's associated with or aspected by, (4) Its strength (exalted, debilitated, combust, etc.), and (5) The Antardasha lord's relationship to the Maha Dasha lord.