Mahalaya Amavasya 2025 falls on 21 September. Learn about its date, rituals, significance, and how to perform puja or tarpan for your ancestors. Mahalaya Amavasya or Sarvapitri Amavasya is a significant Hindu festival for honouring ancestors, marking the end of Pitru Paksha. Here's all you need to know. 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. 1. Introduction Brief explanation: Mahalaya Amavasya, also known as Sarvapitri Amavasya, marks the climax of Pitru Paksha and the onset of Devi Paksha —a time for honoring ancestors and embracing divine feminine energy. 2. Date and Time Date: Sunday, September 21, 2025 Samayam TeluguThe Economic TimesPublicHolidays.in Calendar Labs Amavasya Tithi (New Moon): Begins September 21 at approximately 03:47 AM IST, ends September 22 at 04:53 AM IST AstroVed Shraddha Tithi & Muhurats (as per ...