Three Bihus, rongali or bohag, celebrated with the coming of spring and the beginning of the sowing season; kongali or kati, the barren bihu when the fields are lush but the barns are empty; and the bhogali or magh, the thanksgiving when the crops have been harvested and the barns are full.
Bihu songs and Bihu dance are associated to rongali bihu. The day before the each bihu is known as 'uruka'.