There is no way to know. I don't want my students to be turned away. If very many instructors have the same deadline dates students will receive lower quality service. Test center staff are stretched extremely thin at all locations. Of particular concern is the test deadline dates for the telecourses.
Most students wait until the last day of a test window to take an exam.
Instructors may review what is posted to try and avoid having the same deadline as the larger sections. Instructors are also urged to encourage students to test early in the testing window. You may send your exams one at a time or all at once. Unused exams will be returned at the end of each long semester, after final exams, to the instructor's home test center. Instructors of courses with continuous enrollment need to clarify that their exams should be kept on file.