Nadi dosha check: do your two birth stars share a nadi?

Last updated 25 October 2026

Give each person's birth star, or find it from a date of birth or a first name, to see whether the two stars share a nadi and how the Nadi koota scores. Below the calculator: how nadis are assigned, how a practitioner reads a same-nadi pair, and what to ask about it.

How each birth star gets its nadi

The rule is simple once you have the two birth stars. Counting from Ashwini, the 27 nakshatras are dealt out to the three nadis in a zig-zag, Adi to Madhya to Antya and then Antya back to Adi, a six-star cycle that repeats round the zodiac. Each nadi ends up with nine stars. Two stars in one group give the koota nothing out of 8; stars in different groups earn all 8. Nothing in between is possible.

The calculator can find each person's birth star in one of three ways, chosen separately for each person:

• Birth nakshatra. Pick it from the list if it is written in a family horoscope. This is the most direct input.
• Date of birth. From the date, a time if you have one, and the offset from Universal Time at the birthplace, the calculator finds the Moon in the sidereal zodiac (Lahiri ayanamsa). With no time it takes the midday Moon and names every star crossed that day; with a time near a star boundary it says how many minutes off the edge lay.
• First name. The opening sound of the name is matched against the customary chart of syllables and stars. When it could be read more than one way, you pick the reading that fits.

Whenever an input leaves room for more than one star and a different star would flip the outcome, you are told plainly. That warning deserves more attention than the verdict: the check can never be firmer than the birth stars it starts from.

How an astrologer weighs a same-nadi pair

The three nadis are traditionally linked with the three constitutions of classical Indian medicine: Adi with vata, Madhya with pitta and Antya with kapha. In matching texts, a same-nadi pair is seen as two people of too similar a nature, and the texts traditionally link it with concerns about health and children. These are traditional statements about a rule, not forecasts for a particular couple.

In practice an astrologer rarely stops at the zero. Many traditions describe exceptions, for example when the two Moons share a sign but sit in different stars, or when the lords of the two Moon signs are the same planet or close friends. The lists differ between regions and texts, and some astrologers accept none of them. This calculator applies no exceptions, so the right question to take to a consultation is which ones your astrologer recognises and whether any fits your pair.

A practitioner will also set the Nadi outcome inside the whole match: the other seven kootas, Mangal dosha in both charts, the seventh house and its lord, and the navamsa. For the full 36-point picture, run the kundli matching calculator with both birth dates.

If the conversation turns to children or inherited health, the sensible step is a doctor, not a ritual. Medical tests answer those questions directly, and no responsible astrologer should discourage them.

Questions to ask your astrologer about Nadi dosha

• Are you working from our birth stars or from name stars, and how sure are you of each?
• Which Nadi exceptions do you recognise, and does our pair meet any of them?
• How much does the Nadi zero matter to you compared with the rest of the two charts?
• Is the problem the same nadi alone, or the same star and the same pada as well?
• What would you tell us if the other kootas and both seventh houses look strong?

For how a matching session usually runs, see our guide to kundli matching consultations.

The 27 nakshatras by nadi

Two stars in the same row share a nadi. Find both birth stars here to check the rule by hand, or to see which neighbouring star would change the answer if a birth time is uncertain.