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In short: The Ketu antardasha within the Mercury mahadasha lasts 11 months 27 days (about 0.99 years). The Mercury mahadasha emphasises learning, trade and communication. Within it, Ketu's sub-period tends to bring detachment, endings, spiritual interest or sudden turns. Technical and research focus; communication may need care.
At a glance
| Mahadasha | Mercury (17 years) |
| Antardasha | Ketu (#2 of 9 in this mahadasha) |
| Length | 11 months 27 days (360-day years) |
| Preceded by | Mercury–Mercury |
| Followed by | Mercury–Venus |
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 Ketu promises in the chart, coloured by Mercury. Its results depend most on the houses Ketu 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–Ketu period? 11 months 27 days in 360-day dasha years — about 0.99 years.
Is the Mercury–Ketu period good or bad? Neither in general. It depends on how Mercury and Ketu 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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