Sure would be helpful if you would to the math for us and add run times everywhere you have start and end times. You could eliminate end time like the following attached image:
I like having the end time presented… please don’t remove it. Adding the run time IN ADDITION to the start-end would be fine though.
Isn’t the end time basically the next zone’s start time? I doubt they’d remove end time but they could show both if they have enough room or they could provided an option to see one or the other.