A method piece on the two major Vedic dasha systems. The mechanics of Vimshottari's 120-year planetary cycle and Jaimini's sign-based Chara Dasha, the Karaka and Karakamsa frameworks specific to Jaimini, the conventional weighting that places Vimshottari as primary and Jaimini as cross-check, and the resolution sequence Tempora applies when the two systems disagree.
Vimshottari is the most widely used dasha system in the Vedic tradition. The mechanism is a 120-year cycle of nine planetary periods of fixed proportional duration, anchored to the Moon's nakshatra position at birth. The named periods are: Sun 6 years, Moon 10, Mars 7, Mercury 17, Jupiter 16, Venus 20, Saturn 19, Rahu 18, Ketu 7. The starting period and starting fraction at birth are determined by the natal Moon's nakshatra and degree. Sub-periods (antardasha) and sub-sub-periods (pratyantardasha) follow the same proportional logic, recursively.
Jaimini is an alternative system attributed to the sage Jaimini, with several distinctive features that diverge from the standard Parashari framework. The system's defining components are described below.
| Period (Mahadasha) | Duration (years) |
|---|---|
| Sun | 6 |
| Moon | 10 |
| Mars | 7 |
| Rahu (north node) | 18 |
| Jupiter | 16 |
| Saturn | 19 |
| Mercury | 17 |
| Ketu (south node) | 7 |
| Venus | 20 |
| Total cycle | 120 |
The cycle runs in the same fixed sequence (Sun → Moon → Mars → Rahu → Jupiter → Saturn → Mercury → Ketu → Venus → Sun…). The natal Moon's nakshatra determines which period is active at birth and how much of that period has already elapsed.
Chara Dasha is a sign-based dasha system rather than a planet-based one. Each dasha is assigned to a sign (rashi), not to a planet. Period lengths derive from the position of the sign-lord and a set of traditional sequencing rules. Because the duration depends on chart-specific lord placements, the total cycle length and the period ordering vary from chart to chart in a way Vimshottari's fixed-proportional cycle does not.
Jaimini introduces eight karakas (significators) ranked by planetary degree at birth. The planet at the highest degree within its sign becomes the Atmakaraka (soul-significator); the second-highest becomes the Amatyakaraka (career-significator); and so on through the ranking. This produces a person-specific significator set — the karaka assignments differ from chart to chart depending on which planet happens to occupy the highest degree position. The degree-ranked karaka system is independent of the fixed sign-lord karaka system used in standard Parashari teaching, where significators are universal across charts.
Argala is a distinctive Jaimini aspectual rule based on which signs deliver intervention to a given sign. The convention identifies the signs that exercise an argala (a stake or intervention) on a target sign and reads their occupants and lords as factors that interfere with or support the target sign's significations. Argala sits alongside Jaimini's standard sign-aspect rules and is a Jaimini-specific reading layer not used in standard Parashari interpretation.
The Karakamsa is the Atmakaraka's position in the Navamsa (D-9) chart. Conventional Jaimini teaching reads the Karakamsa as a soul-direction indicator — the structural axis along which the native's deeper trajectory plays out. The Karakamsa is read alongside the standard D-9 reading and is one of the two distinctive Jaimini-specific reading anchors, alongside the degree-ranked karaka system itself.
| Feature | Vimshottari | Jaimini Chara Dasha |
|---|---|---|
| Anchor | Moon's nakshatra at birth | Lagna (or Atmakaraka, in some variants) |
| Period assigned to | Planets (nine, including Rahu and Ketu) | Signs (rashis) |
| Period duration | Fixed proportional (Sun 6 … Venus 20) | Derived from sign-lord position and sequencing rules; varies by chart |
| Total cycle | 120 years | Variable; the standard sign-cycle is twelve periods, summing differently across charts |
| Significator system | Fixed Parashari karakas (e.g. Sun for father, Jupiter for husband, Venus for wife) | Degree-ranked Jaimini karakas (Atmakaraka, Amatyakaraka, etc.) — person-specific |
| Aspect rules | Standard Parashari planetary aspects | Jaimini sign-aspects and argala rules |
| Soul-direction reading | Moon and lagna lord, conventionally | Atmakaraka and Karakamsa |
Both systems are used by serious chart-readers. Many practitioners use Vimshottari as the primary timing system and Jaimini Chara Dasha as a cross-check. The two are not interchangeable — they are different instruments built on different mechanical premises, and they will frequently report different things about the same chart.
When the two systems disagree on timing or signification, conventional teaching applies a structured weighting rather than a free choice between systems. The weighting reflects the depth of the verification literature and the specific strengths of each system.
When Vimshottari and Jaimini Chara Dasha disagree on timing or signification for a specific question, the conventional resolution runs through four cross-references in sequence. The sequence is structural — each step adds an independent layer of evidence — and the verdict on the disagreement falls out of where the layers cluster, not from a single tiebreaker.
Tempora uses Vimshottari as the primary dasha layer in all forward-call work because the verification literature is substantially larger and the mechanics are less interpretively elastic. Jaimini is used for soul-direction questions — Atmakaraka and Karakamsa specifically — and as a cross-check on Vimshottari readings. The two systems are run alongside each other, not in competition; the reading sequence places Vimshottari first and Jaimini second.
For any timing or signification question where the two systems disagree, the most useful single cross-reference is the transit layer. Transits do not depend on either dasha system, so transit confirmation is independent evidence for one side or the other. A Vimshottari-versus-Chara disagreement that aligns cleanly on the transit side has a structural reason; a disagreement where the transits are themselves ambiguous typically resolves through Ashtakavarga scores or the natal-chart structure for the relevant houses. Reading the transit layer first, before the Ashtakavarga and the natal structural read, saves a step in the resolution sequence.
Three limits should be marked clearly. First, neither system overrides the natal chart's structural ceiling. A favourable Vimshottari period and a favourable Chara sign on the same question do not deliver outcomes the natal chart cannot support — the period and the sign are the timing layer; the natal chart is the disposition layer. Treating the dasha reading as a forecast independent of the natal disposition is method error.
Second, the two-system framework does not eliminate interpretive ambiguity. The four-step resolution sequence narrows the verdict but does not always produce a single clean answer. Some disagreements remain unresolved at the dasha layer and have to be carried forward as a flagged uncertainty in the reading. The convention is to default to Vimshottari in unresolved cases; the convention is not a guarantee that the default is correct in every individual case.
Third, the Jaimini literature has multiple competing variants of Chara Dasha duration calculation. Different teachers use different sign-lord rules and different sequencing conventions, and a chart's Chara cycle reads differently depending on which variant is applied. This variability is a structural feature of modern Jaimini practice, not a flaw to be resolved by a single canonical rule. The conventional approach is to settle on one variant for systematic work and read the variant choice as part of the method, not as a hidden parameter.
This article was first published on 2026-04-15 with case-study claims (n=200 disagreement-case dataset, Jaimini-versus-Vimshottari accuracy comparison percentages by life domain — career 72% vs 61%, fame 74% vs 59%, foreign travel 69% vs 57%, health 63% vs 77%, marriage 58% vs 71%, spiritual shifts 54% vs 68%; agreement-scenario accuracy claims — 89% overall, 91% career, 88% health-risk, 84% relationship; specific named-cohort case counts — 47 career-agreement cases, 33 health-risk-agreement cases, 29 relationship-agreement cases; Chara Dasha calculation-method accuracy comparisons — K.N. Rao versus P.V.R. Narasimha Rao on the same 200 cases at 72% vs 67% career and 71% vs 69% foreign travel; and a domain-based "winner" verdict that Jaimini wins career/fame/foreign travel and Vimshottari wins health/relationships/spiritual) that were not supported by a workings file or source dataset. On 2026-05-06, this article was rewritten as a method piece — the n=200 dataset, the by-domain accuracy comparison percentages, the agreement-scenario accuracy claims, the named-cohort case counts, the K.N. Rao versus Narasimha Rao calculation-method accuracy comparison, the domain-based winner verdict, and the methodology-revision banner were dropped. The methodology-revision banner was removed in favour of an atomic-claim block at the top and this audit-trail disclaimer at the bottom. The Vimshottari and Jaimini technique itself — the Vimshottari fixed-proportional 120-year cycle anchored to the Moon's nakshatra (Sun 6, Moon 10, Mars 7, Mercury 17, Jupiter 16, Venus 20, Saturn 19, Rahu 18, Ketu 7), the Jaimini distinctive components (Chara Dasha sign-based timing, the eight degree-ranked karakas, argala, the Karakamsa as the Atmakaraka in the D-9), the conventional weighting that places Vimshottari as primary because of the larger verification literature and Jaimini as cross-check (with soul-direction signification as Jaimini's specific strength), and the four-step disagreement-resolution sequence (Vimshottari antardasha state, transit confirmation, Ashtakavarga for the relevant signs, natal-chart structural signatures) — is preserved as conventional Vedic teaching from the classical literature, not as a statistical claim. Audit log: docs/principles/legacy_content_audit.md. This article represents conventional Vedic teaching and Tempora Research method documentation; it does not constitute medical, financial, legal, or professional advice.