Effective date of laws

An act of the Legislature required to be approved and approved by the Governor only shall take effect no-sooner than 60 days from the end of the session at which the same shall have been passed while an act required to be approved by the Secretary of the Interior only after its veto by the Governor and so approved shall take effect no sooner than 40 days after its return to the Governor by the Secretary of the Interior. The foregoing is subject to the exception that in case of an emergency the act may take effect at an earlier date stated in the act provided that the emergency be declared in the preamble and in the body of the act.