September is a great time to ask yourself that question. Most DUS students will schedule in November with the exception of priority (early) registration for some (veterans, athletes, Schreyer Scholars, and students with disabilities).
How to determine your registration date:
1) Typically students with more credits register first; registration dates are determined by adding your total credits earned to the credits on your current schedule.
2) There are two way to look up your date to register: Registration Timetable and in LionPATH, look at your Student Center for Enrollment Dates.
3) You can begin enrolling in classes at 12:01 a.m. on your day to schedule.