YYJ-YVR-YUL-YOW-YFB-YOW-YYZ-YYJ
I left YYJ at 19:55/27MAR and arrived back at 23:08/28MAR. I had 3hrs in YVR, 1hr 30min in YUL, 40 min in YOW (the first time), 1hr in YFB, 1hr 30min in YOW (the second time), and 1hr 30min in YYZ. That was a long day, but not nearly as long as some of yours!