Paush Amavasya 2025, the final new moon of the year, will be observed this week. Known as "Chhota Pitru Paksha," this day is considered highly auspicious for honoring ancestors and seeking relief from Pitru Dosha. From Paush Amavasya 2025 date to Shubh Muhurat time and rituals, below is everything to know about the last Amavasya of the year.