Sade Sati (literally “seven and a half”) is the period during which transit Saturn moves through the 12th, 1st, and 2nd rashis from your natal Moon — three rashis × ~2.5 years each = ~7.5 years.

Phases:

• Phase 1 — rising arc; Saturn in the 12th from Moon. Often felt as withdrawal, expense, foreign matters.
• Phase 2 — peak; Saturn in the natal Moon’s rashi. Identity, body, and emotional core are recalibrated.
• Phase 3 — descending arc; Saturn in the 2nd from Moon. Wealth, family, and speech themes come into focus.

This calculator uses Saturn’s apparent (true) sidereal longitude. A retrograde dip back across a rashi boundary that lasts under 90 days stays inside one arc; a longer one ends the arc, and Saturn’s return starts a new one — so an arc can last only a few months, and the next arc can be a retrograde return into the 2nd from your Moon rather than the next full Sade Sati. Boundary precision is ±7 days; for high-precision transit dates, generate a full kundli on the kundli page and read Saturn’s ingress directly from planetary positions.