Dhanu lagna · vimshottari
The Ketu Mahadasha for Sagittarius Ascendant
7 years · Ketu rules no house
The Parashari way to read a mahadasha for a given ascendant starts with the houses its lord holds. For Sagittarius ascendant Ketu holds none: the nodes rule no sign in whole-sign lordship, so the 7-year Ketu mahadasha for Sagittarius is read through the lord of the sign Ketu occupies at birth, and through that sign’s house from Sagittarius, which no table can supply without the chart.
Ketu is exalted on the commoner reckoning in Scorpio, the 12th from Sagittarius, and debilitated by the same reckoning in Taurus, the 6th; planets.js records other signs as well. Ketu counts Jupiter, Sagittarius’s lagna lord, neutral; Jupiter’s own row names no node, so the reverse has no entry. Ketu’s own nakshatras fall in Ashwini (the 5th), Magha (the 9th) and Mula (the 1st) for Sagittarius ascendant, which is where a birth that opens in the Ketu mahadasha has its Moon.
The Nine Sub-Periods, by Lordship for Sagittarius
| # | Antardasha | Length (classical) | Its lord rules, for Sagittarius |
|---|---|---|---|
| 1 | Ketu–Ketu | 4 months 27 days | no house |
| 2 | Ketu–Venus | 1 year 2 months | the 6th and the 11th |
| 3 | Ketu–Sun | 4 months 6 days | the 9th |
| 4 | Ketu–Moon | 7 months | the 8th |
| 5 | Ketu–Mars | 4 months 27 days | the 5th and the 12th |
| 6 | Ketu–Rahu | 1 year 18 days | no house |
| 7 | Ketu–Jupiter | 11 months 6 days | the 1st and the 4th |
| 8 | Ketu–Saturn | 1 year 1 month 9 days | the 2nd and the 3rd |
| 9 | Ketu–Mercury | 11 months 27 days | the 7th and the 10th |
For Sagittarius ascendant, three of the Ketu mahadasha’s sub-periods belong to lords of a dusthana (the 6th, 8th or 12th): Ketu–Venus, Ketu–Moon and Ketu–Mars, and two to lords of a trikona other than the 1st: Ketu–Sun and Ketu–Mars. The sub-period of Jupiter, Sagittarius’s lagna lord, is Ketu–Jupiter, the seventh of nine, 11 months 6 days long. Counted in time, sub-periods whose lords hold a dusthana for Sagittarius take 2 years 1 month 27 days (31%) of the Ketu mahadasha’s 7 years, and those whose lords hold a trikona other than the 1st take 9 months 3 days (11%); a lord holding both is counted in both. In the Ketu mahadasha for Sagittarius, the Rahu and Ketu sub-periods are read through their dispositors in the chart, since neither node rules a house.
For a Sagittarius-rising chart this is the frame of the Ketu mahadasha, not a forecast: where Ketu and each sub-period lord actually sit, and their dignity there, decide what it comes to, and this page cannot know either.
Related
For Sagittarius or any other ascendant, the Ketu mahadasha’s sub-period arithmetic, with the nine pratyantars of each, is on the Ketu mahadasha table; the Sagittarius chart house by house on the Sagittarius ascendant page. How the Ketu mahadasha is read in general is in our Ketu mahadasha article, and the system in Vimshottari dasha explained.