The final exam schedule is set by the college rather than your individual professors, though they will likely have it noted on the syllabus or course schedule. The official time slot is not the same as your normal class time in fall/spring semesters. (This is because finals periods are longer than class periods, so everything must be spread out to have classrooms available.)
The academic calendar is available over a year in advance with final exam weeks clearly labeled. Do not make vacation or other class-skipping plans for that week.