If a course is showing up on the schedule on an incorrect day, this could be due to the begin date and the start day in the schedule set.
Article
Number:101433
Products:
Blackbaud_Student_Information_System
For example, if a begin date is set to a date that lands on a Friday, the start day would need to be a 5. If the date lands on a Monday, the start day would be a 1.
Academics > Scheduling > Schedule Outline
Select Edit across from the schedule set
In the general tab, make sure the Begin Date corresponds accordingly with the Start Day