Training isn't a 8-4 job, while you may only be at work during that time, you'll be studying after dinner until you go to bed on most nights, especially early on in the course. In Moose Jaw you had to be in for the early met brief (7:30 in the summer and 8:00 in the winter) and you were there all day until 4 with an hour for lunch. You flew almost everyday so you always had a flight to prep for, gym classes to go to or something else to occupy your time.
On Sqn is a little different, in Shearwater at the OTU, the days you're flying you're in at least 2 hrs prior to the crew brief (an hour to prep and an hour for a student brief) then crew brief for 1/2 hr, an hour to walk around the aircraft and start it, then a 3 hour sortie. Followed by a debrief. So throw in an hour either side of that and you're in for 8-9 hours. The days I don't fly, I'm in for 8:00 and gone to the arena for 11:30-1:00 and then back up to the hangar till around 3:00 and call it a day.
Back at 423 though will be very different, flying days will be 8hr affairs, non flying days could be as short as a morning. When you're at sea on the CPFs or Destroyers, you're working 12 hrs days 7 days a week. There's really nothing else to do so it's not all that bad.
So expect to work 8-4 with weekends off, if that doesn't happen, well, too bad. That's the military for you.