Kati Bihu is celebrated on the first day of the 'Kati' month in the Assamese calendar, typically in mid-October. The festival marks the relocation of the rice crop and the beginning of the fresh harvest season, reflecting on the past year's conditions. It is celebrated across the state of Assam, where various Assamese tribes have their own rituals and interpretations. Customs include lighting clay lamps outside homes and constructing bamboo pathways for ancestors, symbolizing respect and hope for a better future. The festival, also known as Kongali Bihu, is characterized by a somber atmosphere rather than joyous celebration, as it acknowledges the challenges of the month. Kati Bihu transcends religion, social status, and caste, uniting people from all walks of life in its observance.