Ketu Mahadasha Lasts 7 Years and Separates Only What It Touches

Ketu mahadasha lasts 7 years. A breakup is a 7th-house event, so Ketu brings one only when Ketu occupies the 7th, joins the 7th lord, or when the 7th lord's antardasha runs inside those seven years. Ketu rules no rashi in classical Parashari, so it is never the 7th lord by ownership. It can only color marriage by placement, by the dispositor, or by the sub-period. People in Ketu dasha who have a clean 7th and are running a Jupiter antardasha are not on a breakup clock. They are in a separative mahadasha whose current room is Jupiter's houses.

Ketu's style is withdrawal, endings of identification, and a turn inward. In the 1st it can feel like leaving an old self. In the 4th it can loosen a home. In the 10th it can detach from a title. None of those is a divorce. Divorce patterns need the 7th lord in the 6th, 8th, or 12th, or nodes on the 7th, and then the dasha. If Ketu is in the 10th and the 7th lord is strong in a kendra, a Ketu period can change the career and leave the marriage standing. Blame the house Ketu occupies before you blame the spouse.

Because Ketu has no sign of its own, the lord of the sign Ketu occupies carries the period. Ketu in Sagittarius hands the style to Jupiter. If that Jupiter also rules the 7th, marriage is fully in the story. If that Jupiter rules the 5th, children and romance are in the story and marriage might be quiet. Rahu, always opposite, runs hot where Ketu runs cold. A relationship that starts under Rahu's topics and ends under Ketu's is the axis doing what an axis does, not proof that Ketu dasha ends every bond. Check D9 before you call a rough year a legal ending.