(c) Maharaja Hari Singh, the ruler of the princely state of Jammu and Kashmir, signed the Instrument of Accession with India on 26th October 1947. On 26th January 1950, the Constitution of India was legally enforced. On 15th February 1954, accession to India was ratified by the Sovereign Constituent Assembly of Jammu and Kashmir. The new constitution of Jammu and Kashmir was adopted on 17 th November 1956 and came into effect on 26th January 1957 .