Earlier quoted context omitted.
That was common in my university as well, for the same reason. I think OP's school lacked some common sense with the schedule.
I don't think this is a scheduling thing but a cultural thing. 11:59pm would be 23.59 in other places. The mere use of "11" would suggest morning.
> The mere use of "11" would suggest morning.
No, it does not. We 24ers read clock. 11 doesn't suggest morning.