What is the role of the jyotishi in matching horoscopes for Hindu marriage, and what are the 36 gunas in kundali milan?

What the jyotishi does

A jyotishi reads the kundali, the birth chart, drawn from the date, time, and place of birth of each person. When a marriage is being considered, the jyotishi compares the two charts side by side. The goal is to see how well the couple's planetary positions align across different areas of life, from health and temperament to children and longevity. The jyotishi also looks for specific problems, called doshas, that the tradition treats as serious. The two most widely known are Nadi dosha and Mangal dosha. Beyond the score, the jyotishi often advises on an auspicious date and time, called a muhurta, for the wedding itself.

The 36 gunas and the eight categories

The matching system used most widely is called Ashtakuta milan, meaning eight-fold matching. The word guna here means a point or quality, not virtue in the everyday sense. The 36 points are spread across eight categories, each carrying a different weight.

Varna carries one point and looks at broad temperament and spiritual nature. Vashya carries two points and looks at mutual influence and control between the couple. Tara carries three points and looks at the birth star compatibility and general well-being. Yoni carries four points and relates to nature, instinct, and physical compatibility. Graha Maitri carries five points and looks at the friendship between the ruling planets of each chart, touching on mental and emotional harmony. Gana carries six points and groups people into three natures, divine, human, and elemental, checking how these sit together. Bhakuta carries seven points and is linked to love, health, and prosperity in the marriage. Nadi carries eight points, the highest weight, and relates to health, constitution, and the well-being of children.

The tradition holds that a score of 18 or above out of 36 is the minimum for a match to be considered. Higher scores are seen as more favourable. But the score alone is rarely the whole picture. A jyotishi will usually look at the full charts together, not just the total.

Nadi dosha and Mangal dosha

Nadi dosha is considered the most serious problem in this system. It arises when both people share the same Nadi category. The tradition associates this with health difficulties and problems with having children. Mangal dosha comes from the planet Mars sitting in certain positions in the chart. It is traditionally linked to tension, conflict, or loss in marriage. Both doshas are taken seriously in many families, though remedies and exceptions are also part of the tradition. A jyotishi will often look at whether the dosha is cancelled out by other factors in the chart.

How it works today

Kundali milan is still widely practised across India and in Hindu communities abroad. In some families it is the first step before any meeting between the couple. In others it is one consideration among many, alongside the couple's own feelings and practical matters. Some families consult a jyotishi in person. Others use online tools that calculate the score automatically. Opinions on how much weight to give the result vary a great deal from family to family and region to region. In some communities it is treated as essential. In others it is done as a formality or skipped entirely. There is no single rule across all Hindu families.