Well first of all, the deadline is 10 pm local time for each team so BC has just over a half hour to still make their decisions
Secondly, the deadline isn’t to announce them. It’s to file them with the league. So the Bombers have already made their cuts. They submit them late so that they don’t end up processed on the transaction wire until the next day, as do a few other teams whether it’s on purpose or not. Teams announce them at their own discretion, the Bombers choose to announce them the day after.