State Formation Day is observed in the Indian states of Chhattisgarh, Haryana, Karnataka, and Kerala every November 1. This day marks the anniversary of the formation of these states, with Karnataka and Kerala established in 1956, Haryana in 1966, and Chhattisgarh in 2000. The celebrations include festive processions, ceremonies involving local politicians, folk performances, and various cultural events. Each state recognizes this day as an official holiday, although some businesses may remain open. The origins of these states are rooted in historical administrative changes during British rule and subsequent linguistic reorganization following India's independence. The formation of Haryana was influenced by language movements in Punjab, while Chhattisgarh emerged from a campaign for regional autonomy.