New moon day - dark moon, junction point between ending and beginning. Sacred time for ancestor worship (Pitru Tarpan) and introspection. Moon is invisible - energy is inward and subtle. Highly important for remembering departed souls and offering them peace. Special Amavasyas: Mauni Amavasya (silent fast), Somvati Amavasya (Monday + Amavasya), Diwali Amavasya (Lakshmi Puja). Avoid auspicious ceremonies, weddings, and joyful material events. Focus on remembering ancestors, charity to poor, and inner spiritual work. A day for endings, not beginnings.