Consider having an option to show the end time of Calls, Month view.
Perhaps it would be a toggle on function that each user had on their Schedule View, or a site parameter they could choose.
Matthew Watkins commented
I would like to see this feature so that we could print out schedules with start and end times to distribute at callbacks. Actors we're considering need this information to make decisions about they're availability. Right now, I either have to make a monthly schedule by hand, give them a stack of confusing weekly schedules, or invite them to the call board before they're cast.