Rahu–Ketu axis
Kaal Sarp Dosha
Check whether all seven planets are hemmed between Rahu and Ketu, and whether the yoga is complete.
Enter your details below to compute your result.
Kaal Sarp (Kalsarpa) Yoga forms when all seven classical planets, Sun through Saturn, lie on one side of the Rahu–Ketu axis. Which side decides the name. Planets in the 180° arc running from Rahu toward Ketu make Kala Sarpa; the arc from Ketu toward Rahu makes Kali Sarpa. The named type (Ananta, Kulika, Vasuki and so on) comes from the house Rahu occupies, counted from the Lagna.
Partial forms are common. When planets fall on both sides of the nodes, the chart is not read as a complete Kaal Sarp.
How to read your result
A complete yoga needs every one of the seven planets on the same side of the Rahu–Ketu axis. If even one planet sits on the other side, the result is No Kaal Sarp.
The type name comes from the house Rahu occupies, counted from the Lagna. That holds even when the yoga is incomplete, so you can still see where the nodes fall.
How it's calculated
Computed from D1 sidereal (Lahiri) longitudes using mean Rahu and Ketu, the same positions as the RishiAstro Kundali. Conjunction with the axis is whole-sign, and the arcs are the two 180° spans between the nodes.
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Frequently asked questions
What is Kaal Sarp Dosha?
It is said to form when all seven main planets are hemmed between Rahu and Ketu on one side of the chart. Interpretation varies widely; the full chart is always read before drawing conclusions.
What is the difference between Kala Sarpa and Kali Sarpa?
Kala Sarpa places all seven planets in the Rahu-to-Ketu arc (Rahu as the serpent's head). Kali Sarpa places them in the Ketu-to-Rahu arc.
Does Kaal Sarp need my exact birth time?
Yes. Planetary longitudes and the nodes all depend on an accurate birth time and place.