<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2018) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2018) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Constitution of India </Th> </Tr> <Tr> <Td_colspan="2"> Original text of the preamble </Td> </Tr> <Tr> <Th> Original title </Th> <Td> भारतीय संविधान code: hin promoted to code: hi (IAST: Bhāratīya Saṃvidhāna) code: hin promoted to code: hi </Td> </Tr> <Tr> <Th> Jurisdiction </Th> <Td> India </Td> </Tr> <Tr> <Th> Ratified </Th> <Td> November 26, 1949; 68 years ago (1949 - 11 - 26) </Td> </Tr> <Tr> <Th> Date effective </Th> <Td> January 26, 1950; 68 years ago (1950 - 01 - 26) </Td> </Tr> <Tr> <Th> System </Th> <Td> Constitutional parliamentary socialist secular republic </Td> </Tr> <Tr> <Th> Branches </Th> <Td> Three (executive, legislature and judiciary) </Td> </Tr> <Tr> <Th> Executive </Th> <Td> Prime minister - led cabinet responsible to the lower house of the parliament </Td> </Tr> <Tr> <Th> Judiciary </Th> <Td> Supreme court, high courts and district courts </Td> </Tr> <Tr> <Th> Federalism </Th> <Td> Unitary (Quasi-federal) </Td> </Tr> <Tr> <Th> Electoral college </Th> <Td> Yes, for presidential and vice-presidential elections </Td> </Tr> <Tr> <Th> Entrenchments </Th> <Td> </Td> </Tr> <Tr> <Th> Amendments </Th> <Td> 101 </Td> </Tr> <Tr> <Th> Last amended </Th> <Td> 1 July 2017 (101st) </Td> </Tr> <Tr> <Th> Location </Th> <Td> Parliament House, New Delhi, India </Td> </Tr> <Tr> <Th> Author (s) </Th> <Td> B.R. Ambedkar and the drafting committee of the Constituent Assembly of India </Td> </Tr> <Tr> <Th> Signatories </Th> <Td> 284 members of the Constituent Assembly </Td> </Tr> <Tr> <Th> Supersedes </Th> <Td> Government of India Act 1935 Indian Independence Act 1947 </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Constitution of India </Th> </Tr>

When did the constitution of india came into the force