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Sade Sati Calculator

Saturn's seven and a half years over your Moon sign — which phase you are in, when it started and when it ends.

About

Sade Sati is the seven-and-a-half-year stretch while Saturn transits the sign before your Moon sign, the Moon sign itself, and the sign after it — three signs at roughly two and a half years each. It comes round about every thirty years, and is read in three phases: rising, peak and setting. The two Dhaiyyas, Kantaka Shani and Ashtama Shani, are the shorter passes of Saturn through the 4th and 8th from the Moon.

The dates here are computed from Saturn's sidereal longitude rather than copied from a table, and they follow its real motion: when Saturn turns retrograde and slips back into the sign it has just left, the period runs on to its final exit.

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Frequently asked questions

What is Sade Sati?

Sade Sati — "the seven and a half" — is the period while Saturn transits the three signs centred on your Moon sign: the one before it, the Moon sign itself, and the one after. Each pass takes roughly two and a half years, so the whole stretch lasts about seven and a half, and it returns roughly every thirty years.

Is Sade Sati calculated from my Moon sign or my Sun sign?

The Moon sign (Rāśi) at birth. If you know it, the calculator needs nothing else and answers immediately; if you do not, enter your birth date, time and place and the Moon sign is computed from the chart.

What are the three phases?

Rising, while Saturn is in the 12th from the Moon; peak, while it is on the Moon sign itself; and setting, while it is in the 2nd. The middle phase is traditionally held to be the heaviest, and the setting phase to ease off gradually.

What is the difference between Sade Sati and a Dhaiyya?

A Dhaiyya (Ardha Sade Sati) is a single two-and-a-half-year pass of Saturn rather than three: Kantaka Shani when Saturn is in the 4th from the Moon, and Ashtama Shani when it is in the 8th. Both are listed here alongside the full Sade Sati periods.

Do the dates allow for Saturn turning retrograde?

Yes. Saturn often enters a sign, turns back into the previous one for some months, and re-enters. The periods here are built from its real motion, so a phase runs to Saturn's final exit from that sign rather than to the first crossing — which is why an end date can fall months after the ingress commonly quoted.

Do I need my exact birth time?

Not for this. The Moon takes about two and a quarter days to cross a sign, so unless you were born close to a sign change, the date and place are enough to settle the Moon sign. Birth time matters far more for the Lagna than for Sade Sati.

Which ayanamsa do the calculations use?

Calculations use the sidereal (nirayana) zodiac. Lahiri is the default ayanamsa — the one used by the Indian civil calendar — with Raman and KP available as alternatives.