Course Start & End Dates (Within the Same School Year)

I would love the ability to set specific start and end dates for courses. For example, I teach at the HS level and we follow a block style semester schedule. I teach 3 of my classes from August to January and then switch to teach 3 new classes from January to June. Right now, it when I pull the outline view or units schedule, each class has half of a year with no data, and it looks incomplete. I would love for the unit/calendar views to display my new courses starting right at the end of the previous to keep everything in one space, and tidy.