(1) The date of the passing of an Act of the Oireachtas is the date of the day on which the Bill for the Act is signed by the President.

(2) Immediately after the Bill for an Act of the Oireachtas is signed by the President, the Clerk of Dáil Éireann shall endorse on the Act immediately after the long title the date of the passing of the Act, and that date shall be taken to be part of the Act.