Pillar article
Does Rahu Mahadasha Cause Divorce?
Rahu mahadasha lasts 18 years. Divorce is asked of the 7th lord, of Venus, and of the Navamsa 7th. Rahu answers that question only when it occupies the 7th, joins those lords, or rules a sign that falls there.
Eighteen years are not one marital weather
Rahu's antardashas follow the Vimshottari order starting from Rahu: Rahu, Jupiter, Saturn, Mercury, Ketu, Venus, Sun, Moon, Mars. Venus antardasha inside Rahu lasts 18 times 20 divided by 120, which is 3 years. That slice can be the marriage story inside a node period, for better or worse, depending on Venus's sign. A Saturn antardasha inside the same 18 years can be the cold, separating slice. Blaming the whole mahadasha for a divorce collapses nine sub-periods into a headline. The mahadasha lord sets the climate. The antardasha lord sets the season.
When Rahu actually touches marriage
Rahu in the 7th intensifies partnership and often makes the match unconventional. Rahu with the 7th lord carries the spouse house into Rahu's agenda. Rahu with Venus does the same to the karaka. If none of those contacts exist, a Rahu mahadasha is about Rahu's own house and its dispositor. A Rahu in the 10th during these 18 years is a career story. It becomes a marriage story only if the 10th happens to be tied to the 7th lord by conjunction or exchange. D9 remains the check. A rashi Rahu on the 7th with a clean Navamsa Venus is a loud natal placement and a softer varga.
Separation still needs the dusthana logic
The separations Jyotish actually names are the 7th lord in the 6th, 8th, or 12th, or Venus with Saturn, Rahu, or Ketu, tested in their dashas. Rahu mahadasha causes a divorce in the loose speech of headlines. In the chart it causes Rahu's topics to ripen. If those topics include a damaged 7th, the risk of a split is real and still not automatic. Two charts and two Navamsas belong in the sitting. One person's Rahu period cannot dissolve a marriage the other chart is holding together.
Frequently asked questions
Does every Rahu mahadasha threaten marriage?
Only when Rahu, the 7th lord, or Venus are connected and one of them is running. A Rahu period that activates the 3rd or the 11th is a different set of houses.
How long is the Venus slice inside Rahu?
Three years. The figure is 18 times 20, divided by 120. It is the marriage-karaka's turn inside the node period, not a verdict.
Can the Navamsa outweigh rashi Rahu?
It can soften or sharpen. Read both. A damaged D9 7th during Rahu-Venus is more serious than rashi Rahu alone. A strong D9 does not let you ignore the rashi, and the rashi does not let you ignore D9.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.