Nadi koota
Nadi koota is the eighth and heaviest Guna Milan factor, worth 8 points. Each nakshatra belongs to one of three nadis: Adi, Madhya or Antya. Different nadis score 8; the same nadi scores 0.
Also known as: Nadi kuta, Naadi koota, Nadi milan, Nadi guna
The three nadis are named after the three constitutions of traditional thought: Adi (vata), Madhya (pitta) and Antya (kapha). The nakshatras are assigned in a zigzag: Ashwini is Adi, Bharani Madhya, Krittika and Rohini Antya, Mrigashira Madhya, Ardra and Punarvasu Adi, and so on round the zodiac.
Nadi is traditionally linked with health, vitality and children, which is why it carries the most points. When both partners share a nadi, the score is 0 and the result is called Nadi dosha.
As each nadi holds nine nakshatras, about one couple in three shares a nadi. Classical texts also give several exceptions, so a zero is the start of a closer look, not the end of the conversation.