I don't understand how this involves fewer keystrokes than described in the hint. If I double-click on a day while in month-view to create a new event, and then invoke the editor by using cmd-E, the new event defaults to all-day. I then have to toggle off the all-day check box using the mouse or trackpad (because there is no way to navigate to that checkbox via the keyboard), and then fill in both the start and end times below it, because they have been set to 10AM-6PM by default. The times cannot be set before unchecking all-day, because when it is checked, there are no times at all, but only beginning and ending dates. Have you actually tried your suggestion while in month-view? I was being driven mad by all the work required to fix each new event until I discovered this hint.