Answer

In Jain Dharma, marriage compatibility is traditionally understood more through values, character, family conduct, ahimsa-based lifestyle, and spiritual compatibility rather than astrology.

However, if you are asking from the common Indian cultural practice of checking birth Nakshatra and Rashi, then generally you need:

• Date of birth
• Exact time of birth
• Place of birth

Using these details, an astrologer or a Panchang/Jyotish chart calculates the person’s:

• Janma Rashi – Moon sign
• Janma Nakshatra – Birth star based on Moon’s position

Jain Understanding

Jain Dharma does not teach that liberation, purity, or spiritual progress depends on Rashi or Nakshatra. A good married life should be based on:

• Right conduct
• Truthfulness
• Non-violence
• Mutual respect
• Control over anger, ego, deceit, and greed
• Support for dharmic living

Practical Takeaway

If your family follows the cultural custom, you may consult a knowledgeable astrologer with accurate birth details. But from a Jain perspective, the more important matching is:

Sanskar, character, dharma-bhav, family values, and mutual understanding.