Mahalaya Amavasya is a significant and sacred day in the Hindu calendar dedicated to honoring ancestors. This special Amavasya (new moon) occurs in the Tamil month of Puratasi, which falls between September and October, during the Mahalaya Paksha period. Mahalaya Amavasya is the New Moon day, which is the last day of the 15-day period called Mahalaya Paksha.on day to offer Tarpanam (ancestral rituals) to your departed ancestors to receive the blessings. Mahalaya Amavasya, observed during Pitru Paksha, is a day to honor and offer prayers to departed ancestors. Performing rituals like Shradh brings peace to their souls and blessings to the living. Learn about Mahalaya Amavasya, the transition from Pitru Paksha to Devi Paksha, its date, time, and significance. Read more the details now!