Nadi dosha calculator

Check two birth nakshatras for Nadi dosha. Choose each person’s nakshatra, or find it from the date of birth or the first syllable of the name; the calculator gives each nadi (Adi, Madhya or Antya) and whether the pair has Nadi dosha by the traditional rule of horoscope matching.

What the three nadis are

In horoscope matching the 27 nakshatras are divided into three nadis: Adi (the first), Madhya (the middle) and Antya (the last). The assignment follows a fixed pattern. Counting from Ashwini, the nadis run Adi, Madhya, Antya, then back again Antya, Madhya, Adi, and the six-star pattern repeats four and a half times around the zodiac, so each nadi holds exactly nine nakshatras.

The rule

Nadi is the eighth of the eight kootas of Ashtakoota milan and carries 8 of the 36 points, more than any other. It compares only the nadis of the two birth nakshatras:

• Different nadis: the Nadi koota scores 8 of 8, and there is no Nadi dosha.
• The same nadi: the Nadi koota scores 0, and the pair is said to have Nadi dosha.

For example, Rohini and Shravana are both Antya nadi, so that pair has Nadi dosha by the rule and scores 0 for Nadi. Rohini (Antya) and Hasta (Adi) are in different nadis, so that pair has no Nadi dosha and scores the full 8.

Because the nadi depends on the nakshatra alone, the rashi, the pada and the rest of the chart do not change it. Two people with the same birth nakshatra always share a nadi.

How the calculator finds each nakshatra

1. Birth nakshatra. If the family horoscope or a temple record names the janma nakshatra, choose it directly. This is the most reliable input.
2. Date of birth. The date, time and UTC offset fix the Moon’s sidereal position (Lahiri ayanamsa), worked out in your browser, and every 13°20′ of it is one nakshatra. The Moon changes nakshatra about once a day, so without a time the tool uses the Moon at noon, names every star the Moon passes through that day with its nadi, and says when one of them would change the answer. The same calculation powers the nakshatra calculator by date of birth.
3. Name. The first syllable of the name is looked up in the traditional table of naming syllables, which gives a nakshatra and pada. This works only when the name was chosen from the birth star, so it is an approximation; when a syllable fits more than one nakshatra, the tool lets you choose.

You can mix the inputs, for example one person by date of birth and the other by nakshatra. When either input leaves room for a second nakshatra whose nadi would change the answer, the result says so.

About exceptions

Texts and family traditions describe situations in which a same-nadi pair is read differently, and they do not agree on the list. This calculator states the basic rule only. It does not apply any exception, does not mark a dosha as cancelled and does not predict anything about a marriage. Those questions belong to an astrologer reading the two complete birth charts.

Related tools and guides

• Kundali matching by date of birth: all eight kootas from two birth dates.
• Gun milan by name: horoscope matching by name, all eight kootas.
• Mangal dosha calculator: the house of Mars, which guna milan does not cover.
• Nakshatra gana calculator: the gana and yoni animal of a nakshatra alongside its nadi.
• Rajju dosha calculator: the rajju and vedha check of South Indian porutham for two nakshatras.
• Nakshatra and pada calculator: find a birth star from the date and time.
• The 27 nakshatras explained.