For an online course, a course schedule will include a sense of the overall course arc (Units, Modules, Lessons) and the major assignment due dates, but not all weekly details and module content. Instead, include details of readings and assignments in the course site pages so that you only have to maintain those details in one place. Avoid adding dates anywhere in the course site except the schedule and the assignment settings. This will make future updates easier and avoid conflicting date information in the course site.
The following are 2 sample course schedules that might be used as stand-alone documents separate from the course syllabus to keep students on track and aware of dates, topics, and upcoming assignments.