Pillar article
Rahu's Eighteen Years and the House He Amplifies
Rahu is the north lunar node, a shadow graha with an eighteen-year Vimshottari mahadasha, and his effect is to amplify the house he occupies. He always sits opposite Ketu. In the exaltation list most Parashari students use, Rahu is exalted in Vrishabha. A remedy, including Durga's worship, is a conduct beside that house. It does not combat Rahu off the chart or shorten the eighteen years.

Amplification is the effect
In the 1st, the self becomes unusual and publicly hard to ignore. In the 3rd, courage and media grow restless. In the 7th, marriage takes an unconventional route and still needs the 7th lord and D9. In the 10th, career can become large and unstable in equal measure. In the 11th, gains and networks swell. In the 12th, foreign stay, expenditure, and retreat swell. These are house meanings with the volume turned up. They are not a single misfortune. Rahu with the Moon agitates the mind and is a separate conjunction from Rahu merely aspecting a house. Schools disagree on Rahu's aspects. This page will not pick a disputed aspect system. It will stay with the occupied house and the opposite Ketu.
What people mean by combat
They want the node gone. The node is an astronomical point, the Moon's path crossing the Sun's, and the birth chart records where that point stood. Durga is the deity commonly paired with Rahu in navagraha worship, and the nine nights of Navratri are a natural devotional window, dated by local tithi. Saturday service sometimes gets mixed in because Rahu is treated like Saturn in some friendship tables. Charity and regularity are reasonable conducts during the eighteen years. A gemstone, hessonite in the popular navaratna list, is a serious step that should follow a full chart, not a fear of the word Rahu, and this page does not prescribe one. No conduct moves Ketu from the opposite sign.
Use the antardasha, not a war
Inside the eighteen years the nine antardashas run from Rahu onward. Rahu-Jupiter is 18 times 16 divided by 120, about 2 years and 5 months, often the slice where a teacher or a foreign doctrine appears. Rahu-Venus brings the marriage karaka into the node's period. The house Rahu occupies tells you the subject of every slice. Jyothish SI shows that house from the Lahiri chart. Combat language hides the subject. Read the house, keep a plain devotion if you want one, and let the antardasha end on the arithmetic.
Frequently asked questions
How long is Rahu mahadasha?
Eighteen years. Antardashas inside it follow the usual order, and their lengths are 18 times the sub-lord's years, divided by 120.
What does Rahu actually do to a house?
He amplifies it: career if he is in the 10th, gains if in the 11th, marriage's unconventional side if in the 7th. Ketu occupies the opposite house.
Which devotion is traditionally paired with Rahu?
Durga, including the nine nights of Navratri dated by local tithi. The worship does not move Rahu's house or end the mahadasha early.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.
