In Jain Dharma, Pandit Maharaj does not follow just one fixed tithi.

Commonly, Jain sadhus and devotees give importance to tithis like:

• Ashtami
• Chaturdashi
• Amavasya
• Purnima

The exact observance can differ by tradition, temple, and sampradaya.

If you mean a specific Pandit Maharaj or a specific Jain tradition, the tithi may be different.