Does your institution or department have a set of schedule rules?
BNCC has the following among their rules:
- All faculty will be on campus 5 days per week, unless they are teaching TWO night classes (6:00-8:50)... then "an effort" will be made to give them a 4 day per week schedule.
- No 'back to back' classes... i.e. you can't have a class at 8:50 if you also want to teach one at 7:45 or 9:55.