Kaal Sarp Dosh Check

What is Kaal Sarp Dosh?

Kaal Sarp Dosh forms when all seven other classical planets sit on one side of the Rahu-Ketu axis in a birth chart, with none crossing to the other side. Rahu and Ketu are the Moon's two nodal points, always exactly opposite each other, so this is a check on which half of that line every planet falls in.

First, a quick word on Rahu and Ketu, since everything here hinges on them. In Vedic astrology they're called "shadow planets" — not actual bodies like Mars or Jupiter, but two mathematical points in the sky where the Moon's path crosses the Sun's path. Because of how that geometry works, they always sit exactly opposite each other, 180 degrees apart, in absolutely every chart. Picture a straight line drawn through the center of the zodiac wheel, splitting it into two equal halves — that's the Rahu-Ketu axis.

Kaal Sarp Dosh happens when all seven of the "real" classical planets — Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn — happen to land inside just one of those two halves, with not a single one crossing to the other side. Imagine a chart where every planet bunches up between Rahu and Ketu on one side, like commuters all squeezed onto one half of a train platform. That clustering is the whole condition.

The name paints a vivid picture: the chart swallowed along a serpent's body, Rahu as the head, Ketu as the tail, with the planets trapped in between. Kaal means time, sarp means serpent. Whether it applies to you depends on nothing mystical — just where the planets happened to be sitting relative to that one line the moment you were born.

Two things worth knowing up front. First, in its strict form this is all-or-nothing: either every single planet is on one side, or the dosh doesn't apply — you can't have "a little bit" of it, except under the partial reading explained further down. Second, this check by itself says nothing about whether those trapped planets are strong or weak, helpful or difficult — which is exactly why astrologers who take it seriously never read it in isolation from the rest of the chart.

The calculator above checks your chart directly and tells you which planets, if any, fall outside the axis. If you want to see those positions plotted, the free birth chart calculator shows Rahu, Ketu and every other planet on a full Lahiri wheel.

Kaal Sarp Dosh or Kaal Sarp Yoga — which is right?

Both names describe the same formation and you will see them used interchangeably. The distinction people draw is one of attitude rather than astronomy.

Dosh means blemish or affliction. Yoga means combination or union — a neutral word in Sanskrit that Vedic astrology applies to any noteworthy planetary arrangement, good or bad. Astrologers who treat the formation as a difficulty call it Kaal Sarp Dosh; those who treat it as a distinctive but not inherently negative pattern prefer Kaal Sarp Yoga. A few argue that "yoga" is the older and more accurate usage and that "dosh" is a later framing that made the idea easier to sell.

Nothing in the calculation changes either way. This page uses both terms because both are what people search for, and because the choice between them is a matter of interpretation rather than fact.

Other names for the same thing

The same planetary arrangement is known by several names across India, and people searching in their own language or region often miss it under the Hindi spelling. These all describe the identical condition:

• Kaal Sarp Dosh / Kalsarp Dosh — Hindi, the most common form.
• Kala Sarpa Dosha / Kalasarpa Yoga — the usual South Indian transliteration, common in Telugu and Kannada usage.
• Rahu Ketu Dosha — a plainer description, naming the two nodes that form the axis instead of the serpent metaphor.
• Naag Dosh, Nag Dosh or Naga Sarpa Dosha — naag being the serpent itself. Sometimes used more loosely for any Rahu-Ketu affliction rather than this specific formation.
• Sarp Dosh / Sarpa Dosha — the shortened form.
• Kethu Dosham — Tamil usage, though this often refers specifically to Ketu-related afflictions rather than the full axis condition.

Be careful with the last two. Sarp Dosh and Kethu Dosham are sometimes used for related but different conditions — a single afflicted node, or a curse-related reading from a previous birth — rather than for all seven planets being hemmed inside the axis. If someone has told you that you have one of these, it is worth establishing which condition they actually meant before assuming it is this one.

It is rarer than it sounds

Every chart has Rahu and Ketu opposite each other, so people often assume the dosha is everywhere. It is not. Seven planets moving at seven different speeds all have to happen to be on the same side of one line, and most of the time at least one is not. A single planet sitting across the axis breaks the formation entirely.

This is worth stating plainly because the condition is described so often that it can seem near-universal. It is not common, and being told casually that you "have Kaal Sarp" is frequently either a misreading of the chart or a description of the partial form.

That near-miss case — exactly one planet outside the axis — is what many astrologers call Anshik (partial) or Ardh (half) Kaal Sarp Dosh. This calculator names it explicitly rather than reporting a flat no, because it is the situation people are most often told about second-hand and left unsure of. The result panel lists which planets fall inside the axis and which fall outside it, so you can see exactly how close the chart is either way.

There is no universal agreement on whether the partial form should be counted at all. Some traditions require all seven planets without exception; others allow one outlier, particularly if the outlier is a weak or distant planet. This calculator reports both states separately rather than collapsing them, so you can apply whichever reading you follow.

The twelve types of Kaal Sarp Dosh

When the formation is present, its type is decided by the house Rahu occupies counted from your ascendant, and each of the twelve is named for a serpent from Hindu mythology. The type does not change whether the dosha exists — only which area of life the tradition associates it with, taken from the meaning of that house.

• 1. Anant Kaal Sarp Dosh — Rahu in the 1st house. The house of the self, the body and how a person is seen. Traditionally read as affecting identity, confidence and physical constitution.
• 2. Kulik Kaal Sarp Dosh — Rahu in the 2nd. The house of accumulated wealth, family and speech, so this type is associated with money held rather than money earned, and with family matters.
• 3. Vasuki Kaal Sarp Dosh — Rahu in the 3rd. Siblings, courage, short journeys and communication. Often described as the least burdensome of the twelve, since the third house is one Rahu is considered to sit reasonably well in.
• 4. Shankhpal Kaal Sarp Dosh — Rahu in the 4th. Home, mother, land and vehicles. Read as unsettledness around domestic life and property.
• 5. Padma Kaal Sarp Dosh — Rahu in the 5th. Children, education, intelligence and creative work.
• 6. Mahapadma Kaal Sarp Dosh — Rahu in the 6th. Debt, disease, litigation and opposition. The sixth is another house where Rahu is conventionally considered to do relatively well, since it is a house of contest.
• 7. Takshak Kaal Sarp Dosh — Rahu in the 7th. Marriage, partnership and business relationships. Among the more discussed types, because it falls directly on the marriage house.
• 8. Karkotak Kaal Sarp Dosh — Rahu in the 8th. Longevity, sudden events, inheritance and matters that arrive without warning.
• 9. Shankhnaad Kaal Sarp Dosh — also written Shankhchud. Rahu in the 9th, the house of fortune, father, higher learning and belief.
• 10. Patak Kaal Sarp Dosh — also called Ghatak. Rahu in the 10th, the house of career, action and public standing.
• 11. Vishdhar Kaal Sarp Dosh — Rahu in the 11th. Gains, income, elder siblings and networks.
• 12. Sheshnag Kaal Sarp Dosh — Rahu in the 12th. Loss, expenditure, isolation, foreign places and sleep.

Because the type depends on houses, and the houses depend on the ascendant, this is the part of the reading that needs an accurate birth time — the Lagna changes sign roughly every two hours, and an hour's error can move Rahu into the neighbouring house and change the name of your type. Whether the formation exists at all depends only on planetary longitudes, which move slowly enough that the date usually settles it on its own.

You can confirm your ascendant on the birth chart calculator before relying on the type name.

Ascending and descending Kaal Sarp

A further distinction some astrologers apply is the direction in which the planets sit relative to the axis.

Udit or ascending Kaal Sarp is when the planets fall in the half running from Rahu forward to Ketu — the planets are, in the usual phrasing, moving towards Ketu and being swallowed head first. Anudit or descending is the reverse, with the planets in the half from Ketu forward to Rahu.

Traditions disagree on which of the two is heavier, and a fair number of practitioners ignore the distinction altogether. This calculator does not label your chart ascending or descending, because the classification is not agreed on enough to state as fact. What it does give you is the underlying information: which planets fall inside the axis and which fall outside, and the signs Rahu and Ketu occupy, from which either reading can be applied.

What Rahu and Ketu actually are

Here's something that surprises a lot of beginners: Rahu and Ketu aren't physical objects at all. There's no rock or gas ball sitting out there with their name on it. They're the two points in space where the Moon's orbit crosses the flat plane the Earth traces around the Sun — astronomers call these the ascending node and the descending node. Eclipses happen when a new or full Moon lines up close to one of these points, and that real astronomical event is almost certainly where the old myth of a serpent swallowing the Sun came from.

Because they're geometric points rather than solid objects, they give off no light of their own, which is why the tradition calls them chhaya grahas, or shadow planets. One more quirk worth knowing: they travel backwards through the zodiac compared to every other planet, taking about 18.6 years to complete one full circuit. So if you ever notice Rahu's transits seem to run in reverse sign order, that's not a mistake — that's just how these two move.

This calculator uses the mean node rather than the true node. The true node oscillates and can cross a sign boundary several times in a few weeks, which would make the house placement — and therefore the type name — flicker between two answers for charts born near a cusp. The mean node gives a stable result, and it is the convention in most Indian astrological software.

To watch Rahu and Ketu move in real time, and see the axis they form across the wheel, use the live transit wheel.

How to check Kaal Sarp Dosh in your kundli

If you already have a kundli in front of you, you can check this by hand in under a minute. You need three things: the position of Rahu, the position of Ketu, and the positions of the seven classical planets.

1. Find Rahu and Ketu. They will always be exactly opposite each other, six signs apart. In a South Indian or North Indian chart they are usually marked Ra and Ke.
2. Draw the line. Imagine a line across the chart joining them. This divides the twelve signs into two groups of six.
3. Count the planets on each side. Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn. If all seven are in one group of six signs, the formation is present. If exactly one is on the other side, it is the partial or Anshik form. If two or more are, there is no Kaal Sarp Dosh.
4. Name the type. Count which house Rahu sits in, starting from your ascendant as house one. That number gives you the type from the list above.

The one thing to watch is a planet sitting very close to Rahu or Ketu itself. A planet within a degree or two of the axis can fall on either side depending on how precisely the positions were calculated, and different software will disagree. The calculator above lists the planets on each side explicitly, so if your chart is one of these borderline cases you will be able to see it rather than being given a verdict that hides it.

Does it affect marriage, and does it ever end?

These are the two questions asked most often about Kaal Sarp Dosh, and both deserve a straight answer rather than a reassuring one.

On marriage: the formation is not a marriage-specific condition. It is sometimes raised during matchmaking, particularly the Takshak type where Rahu falls in the seventh house, because the seventh house governs marriage and partnership. But Kaal Sarp Dosh is not part of the traditional Ashtakoot Guna Milan scoring, which counts eight kootas from the two Moons and does not consider the Rahu-Ketu axis at all. If you are assessing two charts, the Kundli matching calculator runs that 36-point comparison, and Mangal Dosha is the affliction that actually is checked as standard in matchmaking.

On whether it ends: no. Unlike Sade Sati, which is a transit that begins and finishes on Saturn's schedule, Kaal Sarp Dosh is a feature of the birth chart itself. The planets were where they were at the moment you were born, and that does not change. Anyone telling you that the dosha will "end" on a particular date is describing something else — usually a Rahu or Ketu dasha period, which does have start and end dates and can be checked with the Vimshottari dasha calculator.

This distinction matters, because a natal condition and a running period are read very differently. A birth chart feature describes a pattern present throughout life; a dasha describes a stretch of years when a particular planet is prominent.

Counted from the ascendant or from the Moon?

One more variation is worth knowing about, because it explains why two astrologers can look at the same chart and name two different types.

Whether the formation exists is not in dispute: it depends only on planetary longitudes and the Rahu-Ketu line, and no reference point changes that. But the type depends on counting houses, and while the great majority of practitioners count from the ascendant, some count from the Moon sign instead, in the same way that Mangal Dosha is often checked from both.

Counting from the Moon can shift Rahu into a different house and therefore produce a different serpent name for the identical chart. This calculator counts from the ascendant, which is the standard reading and the one nearly all published descriptions of the twelve types assume. It reports Rahu's house and both nodal signs, so if you follow the Moon-based method you have what you need to recount.

If the two readings disagree for your chart, neither is a mistake — they are two conventions, and the honest answer is that the tradition has not settled on one.

Common misconceptions

• "Everyone has it." No. Rahu and Ketu are opposite in every chart, but all seven remaining planets landing on one side is a genuinely uncommon arrangement.
• "It means something terrible will happen." The formation is a geometric fact about a chart. What the classical literature actually offers on it is thin, and the dire readings in wide circulation are not drawn from those texts.
• "It can be cancelled." Various cancellations are claimed — a strong Jupiter, particular placements of the ascendant lord — but there is no agreement across traditions, and the claims are not standardised the way Mangal Dosha cancellations are.
• "Rahu and Ketu are planets." They are the two points where the Moon's path crosses the ecliptic. Nothing is there.
• "My friend has the same birthday, so we both have it." Possibly, but not necessarily the same type — the type depends on the ascendant, which depends on birth time and place. Two people born on the same day in different hours can have different types, or one may be borderline and the other not.

How seriously to take it

Kaal Sarp Dosh is one of the most commercially exploited ideas in Indian astrology, and it is worth being direct about why. The classical Vedic texts — the Brihat Parashara Hora Shastra and its peers — barely mention it. It does not appear as one of the major yogas in the foundational literature. Its prominence is largely a twentieth century development, and much of that prominence has been driven by the market for remedies rather than by the tradition itself.

That does not make it meaningless. Astrologers who use it treat it as one factor among many: they look at whether the planets inside the axis are strong or weak, which houses they rule, whether Rahu and Ketu themselves are well placed, and which dasha period is running. A chart with the formation and strong planets is not read the same as a chart with the formation and weak ones. You can check that planetary strength directly with the Shadbala calculator.

This page tells you what your chart contains and stops there. It does not sell a puja, recommend a stone, or tell you what will happen to you. Most of what is written about Kaal Sarp Dosh online exists to sell something, and the honest position is that the formation is computable and the consequences claimed for it are not.

How this calculator works

Planetary longitudes come from the Swiss Ephemeris, converted to sidereal positions with the Lahiri ayanamsha, the Indian standard. Your birth city is geocoded so the ascendant reflects where you were actually born.

Ketu is derived as the point exactly opposite Rahu. Each of the seven classical planets is then tested for which half of the zodiac it falls in, measuring forward from Rahu. If all seven are on one side, the formation is present and the type is named from Rahu's house counted from your ascendant. If exactly one planet sits on the other side, the result is reported as partial (Anshik). If two or more do, there is no Kaal Sarp Dosh.

The result panel lists the planets on each side of the axis rather than only the verdict, so a borderline chart is legible instead of being reduced to a yes or no. The calculator is free, needs no sign-up, and stores nothing.

Related tools: Mangal Dosha for Mars, Sade Sati for Saturn's transit over your Moon, the Vimshottari dasha calculator for which planetary period you are running, and Kundli matching if you are comparing two charts. Readers in Tamil may prefer the dedicated Sani Peyarchi page for Saturn's exact transit dates.