On 26 November 1949, the Constituent Assembly of India adopted to the Constitution of India, and it came into effect on 26 January 1950. Ambedkar, recognised as the 'Father of the Constitution of India'Ĭonstitution Day ( IAST: Samvidhāna Divasa), also known as ' National Law Day', is celebrated in India on 26 November every year to commemorate the adoption of the Constitution of India.