LeadNXT Wish you all to Very Happy Republic Day. We celebrate the 67th Republic day of India. Many people throughout India celebrate the nation's Republic Day is observed on January 26, 2016. In India, Republic Day honours the date on which the Constitution of India came into force on 26 January 1950. after nearly three years of deliberations, the Constitution of India was signed. Two days after this on 26 January the Constitution came into effect across India.