(1) Subject to subsections (2) and (4), this Act commences on the day on which it receives the Royal Assent.
(2) Subject to subsection (3), Part 3 commences on a day to be fixed by Proclamation.
(3) If Part 3 does not commence under subsection (2) within the period of 6 months beginning on the day on which this Act receives the Royal Assent, it commences on the first day after the end of that period.
(4) Subject to subsection (5), Part 5 commences on a day to be fixed by Proclamation.
(5) The day fixed under subsection (4) must not be a day occurring before the Convention enters into force for Australia.