Shubho Mahalaya marks the beginning of Devi Paksha, a sacred period dedicated to Goddess Durga, and signifies the end of Pitru Paksha, 16 days of paying homage to ancestors.On Mahalaya, a crucial tradition in Eastern India involves performing Tarpan rituals, typically in the Ganges River. Tarpan is an offering of water, sesame seeds, rice, flowers and prayers to honour dead ancestors, seeking their peace and blessings. By doing so, Hindus believe they're helping their ancestors transition smoothly to the afterlife.