Scheduler — the appointment book — Booked by the night

Cottages, rooms, boats and hire cars are booked in days, not hours. Give the view a start date and an end date that carry no time of day, plus something to draw a row per, and it becomes a Stays chart. The end date is the day it becomes free again. A cottage booked the 1st to the 8th is available on the 8th, and the next guest's bar starts in that same column — so a changeover morning reads as one booking ending and another beginning, not as a clash. That is what every hotel system means by check-out, and reading it the other way would report most of a busy month as double-booked. Drag the middle of a bar to move the whole booking keeping its length; drag either end to change just the arrival or just the departure. A genuinely overlapping pair stacks into two rows so neither is hidden, and both are outlined.