It is now possible to have all day events, whereby the event is marked as all day, and the start and end time is hidden in all views. This actually sets the start time to 00:00 and the end time to 23:59. It does not limit an event to a single day, it is still possible to alter the end date, so as to have a multi-day all-day event.

We have also been request to add an option to enable the hiding of the end date of an event, you will also see this in the attached screenshot.