I think it is purely "sunset" that matters. Never heard the 30 min part before:
Originally Posted by CanaganD
Hours-of-day restrictions for Class 6L, 7L and 8L licences
30.07 (1) Subject to the exception set out in subsection (2), a person to whom a Class 6L or 8L licence is issued must not operate a motorcycle between sunset and sunrise each day.
(2) The daylight-hours restriction under subsection (1) does not apply in the course of the person receiving practical driver training that is being conducted in accordance with Division 27 by a licensed driver training instructor.