Bihu is a set of three important non-religious festivals in the North Eastern Indian state of Assam.Rongali or Bohag Bihu is observed in April, Kongali or Kati Bihu observed in October, and Bhogali or Magh Bihu observed in January.
The Rongali Bihu is the most important of the three, celebrating the colourful spring festival. The Bhogali Bihu or the Magh Bihu is a harvest festival, with community feasts. The Kongali Bihu or the Kati Bihu is the sombre, thrifty one reflecting a season of short supplies and is an animistic festival.
The Rongali Bihu coincides with the Assamese New year as well as with the new year of other regions of East and South-East Asia which follow the Buddhist calendar. The other two Bihu festivals every year are unique to the people of Assam.
Like some other Indian festivals, Bihu is associated with agriculture, and rice in particular. Bohag Bihu is a sowing festival, Kati Bihu is associated with crop protection and worship of plants and crops, and is an animistic form of the festival, while Bhogali Bihu is a harvest festival.
Assamese celebrate the Rongali Bihu with feasts, music and dancing. Some hang brass, copper or silver pots on poles in front of their house. Bihu is also celebrated overseas by the Assamese diaspora community living worldwide.