Monday is their travel day
- no reason they shouldn't be playing on Tuesday.
They did explicitly block off the tenth on the initial playoff schedule. I imagine each site will have early and late games - 1/7-ish in Toronto and 4/10-ish in Edmonton would likely give wall-to-wall hockey. They might adjust the late game in Edmonton, particularly if there are Central time zone teams. While Bruins potentially playing at 1 on a weekday sucks, it gives them max time to prep the ice, along with a good buffer in case of OT games.
The good news is for round 2 and round 3, the active arenas only have 4 teams (or 2 matches) each. By playing every other day, each arena should have 1 game per day except for weekends, so no weird game times.