Sade Sati Calculator

How to read your result

Sade Sati is not one period but three, and the tool names which one you are in. It runs while Saturn transits the sign before your natal Moon, the sign of your Moon itself, and the sign after - three signs at roughly two and a half years each, which is where the seven-and-a-half of the name comes from.

The phases are usually called rising, peak and setting. Rising is Saturn in the 12th from your Moon, peak is Saturn on your Moon, and setting is the 2nd from it. The tool reports the phase, the sign Saturn is in, and the dates that phase started and ends.

The result also tells you when you are not in it, which is the more common answer. If Saturn is anywhere other than those three signs the tool says so and gives the house Saturn currently occupies from your Moon, rather than leaving you to count.

A worked example: a chart currently in peak phase

Take 20 February 1988, 11:00 in New Delhi. The natal Moon falls in Pisces. Saturn is transiting Pisces now, which puts it exactly on the natal Moon - the first house from it - so this chart is in the peak phase.

The full cycle for this chart began on 29 April 2022, when Saturn entered Aquarius, the 12th from the Moon. The rising phase ran from then to 29 March 2025. The peak phase began on that date and runs to 3 June 2027. The setting phase, with Saturn in Aries, runs from June 2027 to 17 April 2030, when the cycle closes.

Eight years, not seven and a half - because Saturn's motion is not uniform. It retrogrades once a year, and a retrograde that carries it back across a sign boundary extends the phase on either side of it. The tool computes the actual ingress dates rather than adding two and a half years three times.

How this is computed

Two things are needed: your natal Moon sign, computed sidereally from the Swiss Ephemeris with the Lahiri ayanamsa, and Saturn's current position on the same sidereal frame. The comparison is by sign, not by degree - Sade Sati is a sign-based rule, so Saturn at the very start of the 12th sign counts as fully in the rising phase.

Phase boundaries are Saturn's actual sign ingresses, looked up rather than estimated, which is why the dates above are irregular rather than evenly spaced.

The result is computed as of now, so re-running it later gives a different answer for the same birth details - that is correct behaviour for a transit tool rather than a bug.

Common mistakes

The first is using the sun sign. Sade Sati is defined against the Moon sign - the sign the Moon occupied at birth - and for most people the two differ. Running it from a sun sign produces a cycle that is simply about somebody else.

The second is confusing Sade Sati with dhaiya. Dhaiya, the small panoti, is the roughly two-and-a-half-year transit of Saturn through the fourth and eighth signs from the Moon. It is a different transit with a different span, and a source describing a two-and-a-half-year period is not describing Sade Sati.

The third is forgetting retrogression. Saturn turns retrograde each year, so it can re-enter the previous sign after having left it. This means the boundary dates are not a clean single crossing, and a cycle can appear to start, stop and start again around an edge.

The fourth is reading the whole seven and a half years as uniformly difficult. The tradition divides it into three phases by which sign Saturn occupies, and the phases are not described as equivalent to each other.

The three phases

The cycle runs while Saturn transits three consecutive signs: the one before the Moon sign, the Moon sign itself, and the one after. At roughly two and a half years per sign, that is where the seven and a half comes from.

The first phase, with Saturn in the twelfth from the Moon, is traditionally read as the rising phase and associated with expenditure and with things being set down. The middle phase, Saturn on the Moon itself, is the peak. The third, Saturn in the second from the Moon, is the setting phase and is read as the one that resolves.

Because the phases are defined by sign ingress, their boundaries are the same retrograde-sensitive dates as the cycle edges. The dated phases shown above come from the actual transit rather than from dividing the total span into three equal thirds, which is why they are not the same length.

What this does not tell you

It does not say what will happen. Sade Sati is a transit window, and the classical texts are explicit that its effect depends on Saturn's natal condition - its sign, house, dignity and the dasha running alongside. Two people in peak phase with very different natal Saturns are not in the same situation.

It also ignores every other transit. Jupiter's return, a Rahu-Ketu axis shift, and the dasha changing all land on the same life without appearing here.

And it is Moon-sign based, so it inherits the Moon's sensitivity to birth time only at a sign boundary - within a sign, an hour or two of uncertainty changes nothing here, unlike the nakshatra tools.

Check which dasha is running alongside →