Currently events >24h are automatically shown in the all day area. This is confusing if the event starts or ends somewhere during the day. E.g. it starts at 5 p.m. on tuesday and ends on 11 a.m. on thursday. Noone knows when the resource is really available if the event is shown as all day from tuesday to thursday. There should be an option to turn that behaviour off and show such events as regular events. Maybe the only thing needing change is this line in _renderEvents: var isMultiDayEvent = event.isAllDay || event.end.getTime() - event.start.getTime() >= MS_PER_DAY;