For those interested, I took a look at the Porter schedule for July 9 (departing YOW) and July 11 (arriving YOW), and compared it to August 6 (departing YOW) and August 8 (arriving YOW).
There are a few amendments between the dates, notably the YWG-YOW and the YOW-YYT timings. The other western Canadian destination timings change slightly as well. I find the YOW-YWG and YWG-YOW timings to be the strangest for any connections. I'll let you all take a look if you want. Tables below sorted by YOW departure and YOW arrival times.
Departures from YOW - July 9:
Arrivals into YOW - July 11:
Departures from YOW - Aug 6:
Arrivals into YOW - Aug 8: