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In short: The Rahu antardasha within the Mercury mahadasha lasts 2 years 6 months 18 days (about 2.55 years). The Mercury mahadasha emphasises learning, trade and communication. Within it, Rahu's sub-period tends to bring ambition, foreign links and sudden change. Cleverness and technology; clarity needed.
At a glance
| Mahadasha | Mercury (17 years) |
| Antardasha | Rahu (#7 of 9 in this mahadasha) |
| Length | 2 years 6 months 18 days (360-day years) |
| Preceded by | Mercury–Mars |
| Followed by | Mercury–Jupiter |
How the two lords relate
A node is involved, so the relationship is read through the node's dispositor and conjunctions rather than BPHS's friendship table.
Classical practice also looks at where the two lords sit relative to each other in the birth chart:
| Position of the antardasha lord from the mahadasha lord | Traditional reading |
|---|---|
| together (same sign) | the two lords act jointly; results depend on their combined dignity |
| 2/12 from each other | classically a less comfortable relationship, often linked with expense or effort |
| 3/11 from each other | a supportive relationship of effort and gains |
| 4/10 from each other | angular to each other: a strong, active combination |
| 5/9 from each other | trinal to each other: the most harmonious relationship |
| 6/8 from each other | the classic difficult relationship (shadashtaka), linked with obstacles or strain |
| opposite each other (1/7) | in mutual aspect: a strong, sometimes polarised combination |
What changes the results
The antardasha delivers what Rahu promises in the chart, coloured by Mercury. Its results depend most on the houses Rahu rules and occupies for the ascendant, its dignity, and its relationship to Mercury. A well-placed antardasha lord in a supportive position from the mahadasha lord tends to give a constructive period; a weak or 6/8-placed one asks for patience. Transits of Jupiter and Saturn during the period, and the pratyantardashas (sub-sub-periods) within it, refine the timing further.
FAQ
How long is the Mercury–Rahu period? 2 years 6 months 18 days in 360-day dasha years — about 2.55 years.
Is the Mercury–Rahu period good or bad? Neither in general. It depends on how Mercury and Rahu are placed in the individual chart, which houses they rule, and how they relate to each other.
Sources
- Brihat Parashara Hora Shastra, ch. 58 (antardashas in the Mercury mahadasha; Santhanam numbering)
- Phaladeepika of Mantreswara, ch. 20 (dashas of house lords and their bhuktis)
Written by Sunyra Editorial. Astrology is a tradition of interpretation; read this as guidance, not a forecast. Disclaimer.
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