When a calendar contains a multi-day event to display (school holidays, or vacation for example), then the first day of the even is always shown, even though this day is already in the past.
This causes wasting 1/3 of the screen just to display an one event. And if another multi-day event is to display, just with another starting day, than 2/3 of the screen is wasted.
Multi-day events that are ongoing should be rendered for today only instead.
