What is Nadi Dosha?
Every nakshatra belongs to one of three Nadis: Adi, Madhya and Antya, traditionally linked with the Vata, Pitta and Kapha constitutions. Your Nadi is set by the nakshatra your Moon occupied at birth, and the nakshatras are assigned to the three in a repeating pattern.
In Ashtakoota matching the Nadi koota awards 8 points when the two partners have different Nadis and none when they share one. A shared Nadi is called Nadi Dosha. The classical concern is about health and children, and it makes no claim about whether two people will get along.
When is Nadi Dosha cancelled?
Classical texts and later authorities give exceptions. The calculator checks three, strongest first. Different Moon signs is the most widely accepted and applies most often. The same Moon sign with different nakshatras is generally waived. The same nakshatra with a different pada is the weakest: some schools treat it as reducing the dosha rather than cancelling it, and it is not universally accepted.
A cancelled dosha still scores zero points on the Nadi koota, so the 36-point total stays reproducible. The exception only tells you whether the classical objection is considered to apply.
How accurate does the birth time need to be?
The Nadi comes from the Moon’s nakshatra. The Moon crosses a nakshatra in roughly a day, so for most people the date fixes it, but a birth close to a nakshatra boundary needs the time. Enter place and time as accurately as you can; the place sets the timezone.
Nadi Dosha and the full match
Nadi is one of eight kootas. A full Kundali Matching report scores all eight, checks Manglik Dosha for both charts and reports Bhakoot Dosha. Use this page when Nadi is the question you need answered first.