Section 6(1a)(i) in The Bihar and Orissa General Clauses Act, 1917
(i)in the case of a Bihar Act made before the commencement of the Constitution, it shall come into operation, if it is an Act of the Legislature, on the day on which the assent thereto of the Governor, the Governor-General or His Majesty, as the case may require, is first published in the Official Gazette, and if it is an Act of the Governor of Bihar, on the day on which it is first published as an Act in the Official Gazette;