(1) A sentence of imprisonment starts—
(a) on the day the sentence is imposed; or
(b) if an offender is not in custody—on the day the offender becomes subject to lawful custody.
(2) However, subsection (1) is subject to—
(a) the following provisions of this Act:
(i) section 11 (Periodic detention);
(ii) section 31 (Combination sentences—start and end);
(iii) section 63 (Start of sentences—backdated sentences);
(iv) part 5.3 (Imprisonment—concurrent and consecutive sentences); and
(b) the Crimes (Sentence Administration) Act 2005 .
(3) A sentence of imprisonment that starts on a day starts at the beginning of that day.
(4) A sentence of imprisonment that ends on a day ends at the end of that day.
(5) In this section:
"sentence of imprisonment" does not include a sentence of imprisonment that is fully suspended.