The Official Renaissance School of Medicine at Stony Brook University Academic Calendar is at https://cbase.som.sunysb.edu/conet/calendar/stud_mainFrame.cfm?school=Medicine
Students can see their schedules in CBase.
The CBase/Registration/Drop-Adds is a way to change your schedule in the clinical years. It will not show a course that begins in less than 30 days.
If you need to add or drop a course that begins within 30 days, you need to submit a paper drop/add form.