Centennial Guy is awesome. Last year had his hours posted outside the pro shop, but I didn't see them when I got my skates sharpened today. In any case, here's what they were:
M-F: 4-9
Sat: 8-8
Sun: 8-6
He is also the equipment manager for the Mount Royal Cougars, so his Friday/Saturday/Sunday hours vary with the Cougars game times.
http://cougars.mtroyal.ca/scheduledisplay.php?team_id=2
He's the guy that I trust with my skates.