Do I Have Kala Sarpa Yoga? Check Your Own Chart

You have it if all seven planets a Vedic chart counts sit on one side of the line joining Rahu and Ketu. Rahu and Ketu are the two lunar nodes, the points where the Moon's path crosses the Sun's, and they always sit exactly opposite each other. That opposition cuts the zodiac into two halves of 180 degrees. Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn either all land in one of those halves, or they do not. One planet on the far side and the yoga has not formed.

A yoga is a named combination of planets, and every other thing written about Kala Sarpa rests on that one test. So it is worth running the test yourself, on degrees you can read off any chart you already have, rather than taking a verdict on trust. The arithmetic is below, and so are the numbers for how often it actually comes out positive.

Reading the test off your own chart

You need one number for each of nine bodies: its sidereal longitude, measured from 0 to 360 degrees round the zodiac starting at the beginning of Aries. Sidereal means the longitudes an Indian chart prints, fixed against the stars using the Lahiri correction. Most charts show these as a sign plus a degree inside that sign. To turn that into a single longitude, count how many whole signs come before it, multiply by thirty, and add the degrees. Cancer is the fourth sign, so 12 degrees of Cancer is 3 × 30 + 12, which is 102.

Now take Rahu's longitude and subtract it from each of the seven planets in turn, adding 360 to anything that comes out negative. Each answer tells you how far that planet lies ahead of Rahu going forward through the zodiac. If all seven answers are below 180, the whole chart sits in the half that runs from Rahu forward to Ketu. If all seven are above 180, it sits in the other half, running from Ketu forward to Rahu. Both count. What does not count is a mix, and a mix is what most charts produce.

If you would rather not do the arithmetic, the Kaal Sarp calculator runs the same test on your birth details and needs no account. If you do not have your planetary degrees at all, the free kundli, which is a printed birth chart, lists the sign and degree of each one.

A chart that has it, worked through

Here is a chart that passes, computed from birth data rather than described in the abstract. Born 28 July 1968 at 21:52 in northern India, 30.70 degrees north and 77.31 east. Pisces was rising.

Every one of the seven values in the last column falls between 0 and 180, so the full yoga is present. Saturn is the first planet in after Rahu, 12.59 degrees along. The Moon is the last one out, still 29.10 degrees short of Ketu. Between those two the seven planets occupy 138.31 degrees of the 180 that were available to them.

Those two end gaps are worth looking at, because they tell you how nearly the arrangement missed. Across the 97 charts in our own database that carry the full yoga, the occupied arc runs a median of 113.7 degrees, from a tightest 26.1 to a widest 171.6, and the nearest planet sits a median 12.8 degrees away from a node. Only 15 of the 97 have a planet within 5 degrees of one. So the usual shape of a real Kala Sarpa chart is not a tight coil pressed against both nodes. It is a loose crowd with room at one end or the other, and the chart above, with Saturn 12.59 degrees in at one end and the Moon 29.10 degrees short at the other, is close to typical.

Six planets out of seven is not the yoga

The single most common way to be told you have Kala Sarpa when you do not is a six-to-one split, which happens when six planets fall on one side and the seventh sits alone on the other. That is the second most ordinary way seven planets can land.

We ran the test across 1,339 distinct charts held in our own database, each one with a real birth time and birth place recorded, and across a separate deterministic population of 1,200 births generated at Indian latitudes between 1960 and 2005. The two agree closely.

Roughly a quarter of everybody has a six-to-one split. If that counted, Kala Sarpa would be a verdict on one person in four, which makes an ordinary arrangement of planets carry a frightening name. Our own detector used to count it, and on the generated population it flagged the yoga on 33.9% of charts before the rule was tightened on 6 August 2026.

The tightened rule keeps a narrow version of the partial form, called anshik, meaning partial. Six planets must be hemmed and the seventh must sit within 10 degrees of Rahu or Ketu, so the one exception is effectively standing in the doorway rather than out in the open. Measured on the same two populations, that fires on 3.2% and 3.6% of charts. A six-to-one split with the loner further out than 10 degrees is reported as no yoga, and across the generated population the median distance for a six-to-one loner is 30.1 degrees, so most of them are nowhere near a node.

Put full and anshik together and the honest total is 10.5% of our real charts and 11.7% of the generated ones. That is roughly one person in ten, which is uncommon enough to be worth checking and common enough that you probably know several people who have it.

Which planet usually breaks it, and why

When a chart falls one planet short, that planet is almost never Mercury, Venus or the Sun. Across the 347 six-to-one splits among our real charts, the loner was Saturn 100 times, the Moon 90, Jupiter 72, Mars 59, Venus 16, Mercury 7 and the Sun 3 times.

Mercury and Venus are limited in how far they can get from the Sun. Measured across the 1,200 generated charts, Mercury stayed within 27.8 degrees of it and Venus within 47.1. The three of them therefore travel as a group and almost always land in the same half of the circle. Saturn, Jupiter and Mars are under no such limit and can sit anywhere, which is why they account for two thirds of the misses between them. The Moon is the fastest of the seven, and its speed is what makes the yoga come and go across the calendar.

Why the yoga arrives in fortnights rather than being spread across birthdays

Kala Sarpa is not sprinkled evenly across birth dates. We tested every one of the 10,958 days from 1 January 1980 to 31 December 2009, taking noon Indian time on each. The full yoga was available on 790 of them, which is 7.2%, and those 790 days were not scattered. They arrived in 68 separate windows, with a median length of 13 days and a median gap of 15 days between one window and the next.

Thirteen days on and fifteen days off is a lunar month, and that is exactly what is producing it. On 1,628 of those days, 14.9% of the total, the six bodies other than the Moon were already all on one side. The Moon then decided. It circles the zodiac in about 27 days, so it spends roughly half of each month inside any given half of the circle, and 790 out of 1,628 is 48.5%, which is that half. The slow bodies open a season lasting months; the Moon opens and shuts a fortnight-long window inside it, over and over, until the season ends.

Seasons end when a slow planet leaves the arc, and then nothing the Moon does can rescue the chart. The longest drought in those thirty years ran 3,199 days, close to nine years, with no birth date at all admitting the full yoga. This is why you may find several people born within a fortnight of each other who all have it, while nobody born the following month does.

Your birth time can decide it, and on some dates it does

Because the Moon is the deciding body so often, and because it covers about 13 degrees in a day, there are dates on which a birth in the morning gives one answer and a birth that evening gives the other. Over the same thirty years, the verdict at one minute past midnight differed from the verdict at one minute to midnight on 136 days. That is 1.24% of all dates, but 15.7% of the 867 dates on which the yoga holds at any hour at all. On roughly one yoga-capable date in six, the hour of birth is the whole answer.

So a calculator that asks only for your date of birth is right most of the time and silently wrong on about a sixth of the dates where the question is live. If you know your birth time, give it. If you do not, the answer you get is a reading of noon on your birthday rather than of your birth, which is worth knowing before you act on it.

The twelve names, and why the Moon cannot give you yours

When the yoga is present it carries one of twelve names, taken from the house Rahu occupies counted from the Lagna. Lagna is the rising sign, the sign coming up over the eastern horizon at the moment of birth, and it is house 1. Counting forward from there:

The Lagna is where this has to be counted from, and that is why the name is the part of the verdict most often handed out wrong. When birth time is missing, the only reference left is the Moon's sign, and the two references agree only when the Moon happens to be sitting in the rising sign, which is about one chart in twelve. Across the 140 charts in our database carrying the yoga, the name from the Lagna differed from the name from the Moon in 128 of them.

The worked example above shows what that looks like. Rahu is in Pisces, which is house 1 from a Pisces Lagna, so the name is Anant. From that chart's Leo Moon, Rahu in Pisces is house 8, which would have been Karkotak. Same chart, same Rahu, different name, and the difference comes entirely from whether the birth time was known. When you see a name attached to a Kala Sarpa verdict, the question to ask is which reference it was counted from.

When the geometry is supposed to show

The arrangement is fixed at birth and never changes. What changes is which planet is running your dasha, the Vimshottari period system that divides a nominal 120-year life among nine lords in a fixed order. Rahu holds 18 of those years and Ketu 7, so 25 years of the 120 belong to the two bodies that define the axis, and most people meet each of them once.

Vimshottari means the 120-year scheme that assigns those chapters to nine planets.

For the chart worked through above, Rahu's mahadasha, the outer period, ran from 7 January 2001 to 8 January 2019, and Ketu's falls from 8 January 2071 to 8 January 2078. The eighteen years to 2019 are when that arrangement had the most to say. The decades before and after belong to other lords, and read as those lords, not as the axis.

This is the part popular accounts leave out, and it is the part that makes the verdict usable. Knowing that the geometry is present tells you very little about any particular year. Knowing when your Rahu and Ketu periods run tells you which years to look at, and you can get those from your birth date alone using the free dasha timeline.

What still needs your chart

The geometry above answers one question: present, anshik, or absent. That question is answerable without an account, and it is the one to settle first. What it does not settle is whether the arrangement matters in your chart, because two charts can carry the identical split and read completely differently.

What separates them sits in the rest of the chart rather than in the axis. Rahu and Ketu land in a pair of opposite houses, and an axis through houses 1 and 7 touches a different area of life from one through 5 and 11, so the same geometry points somewhere else. The hemmed planets are then strong or weak in the signs they occupy, which is what the words exalted, meaning a planet sitting in its best sign, and debilitated, meaning its worst, are describing. In the worked example two of the seven, Saturn in Aries and Mars in Cancer, are debilitated, so that chart is hemming a weaker set of planets than a chart whose seven are mostly dignified. Last are the dates of your own Rahu and Ketu periods, which come from your Moon's exact longitude at birth and so differ for two people born on the same day.

A free account computes those from the same birth details you would type into the calculator, keeps the chart so you are not entering it again, and lets you ask about it directly. So instead of being told you have Anant Kala Sarpa, you can see Rahu's house, the dignity of each hemmed planet, and your own Rahu and Ketu dates, which is what the verdict was read from.

Dignity means the strength a planet takes from the sign it sits in.

Related

• Kaal Sarp calculator, the same test run on your birth details, no account needed
• Free kundli, for the sign and degree of each planet in your chart
• Free dasha timeline, for your own Rahu and Ketu period dates
• Kala Sarpa Yoga: effects and timing
• Kaal Sarp Dosha remedies
• Nag Panchami, the serpent rite associated with the yoga
• All Vedic insights