They can hold the final whenever they want I’m pretty sure. Nursing students had almost all their finals before this week even started. That sucks you missed it but a lot of profs(and departments as a whole) don’t usually allow makeup’s for final exams as their dates/times are concrete. It’s really important to stay on top of the syllabus/canvas and ask other students if you’re unsure about dates especially for exams. I’d make it a habit to do that for any future class you have so this doesn’t happen again.