Tihar, also known as Deepawali, is the most celebrated festival after Dashain in Nepal. It is a five-day festival celebrated in late autumn and has very unique traditions. While various communities celebrate Tihar in different ways, there are also many commonalities. First day - Kag Tihar (Crow Puja) On the first day of Tihar, crows are worshiped and fed early in the morning. People leave food items outside for crows to eat. Crows are considered to be the messenger of death.