Sade Sati
Saturn's seven-and-a-half years over the natal Moon — traditional Jyotish
Sade Sati ('seven and a half') is Saturn's slow transit through the sign before the natal Moon, the Moon's own sign, and the sign after — roughly two and a half sidereal years per sign. It is among the most consulted computations in Indian astrology, and among the simplest: pure transit geometry between one slow planet and one natal point. The companion dhaiya ('two and a half') marks Saturn in the 4th or 8th from the Moon.
What it measures
The real periods during which sidereal Saturn occupies the 12th, 1st or 2nd sign from the natal Moon (the rising, peak and setting phases), with boundaries taken from Saturn's actual sign ingresses — including genuine retrograde re-entries, which produce the split periods the almanacs print.
Where practitioners disagree
- Which ayanamsha frames Saturn's sign?
Lahiri (ours, the Indian standard) — other ayanamshas move the ingress dates by weeks
This engine: Lahiri, matching the rest of the Vedic module.
Sources
- Traditional Jyotish, transit doctrine of Shani over Chandra