Sun tracking allows your blinds to track the sunrise and sunset. If you enable Sun Tracking on your schedule then the room schedule will track and continue to remain at that relationship to the sunrise and sunset throughout the season. For example if you have set your schedule to 9am with sunrise being 8am in the summer and enable sun tracking. You have set your blinds to continue to open an hour after sunrise. So when the sunrise gets later in the winter and shifts to 9am, your blinds will open at 10am allowing you keep the light levels in your house consistent.