Mahalaya is the harbinger of the arrival of Goddess Durga. It marks the beginning of “Devipaksha” and the ending of “Pitripaksha”. Mahalaya is celebrated to invoke the goddess possessing supreme power. Thus, the day of Mahalaya bears supreme significance to the Bengalis.
Mahalay is also considered the day of remembrance of departed souls of the family. On this day, the ritual of offering “tarpan” in memory of forefathers is commonly practiced. Tarpan is offered on the banks of River Ganga by priests for different group of devotees.