Section 1(3) of the Hindu Marriage Act, 1955, states that the Act shall come into force on such date as the Central Government may, by notification in the Official Gazette, appoint. The Act received the assent of the President on May 18, 1955, and was notified to come into force on the same day. Therefore, the Hindu Marriage Act, 1955, came into operation on 18th May, 1955.