Section 123(1) in Tamil Nadu Town and Country Planning Act, 1971
(1)(A)All rules made under this Act shall be published in the Tamil Nadu Government Gazette, and unless they are expressed to come into force on particular day shall come into force on the day on which they are so published.(b)All notifications issued under this Act shall, unless they are expressed to come into force on a particular day, come into force on the day on which they are published.