Fitness doesn't count Sunday

[ADevaux42]

In fact, distance in fitness counts the number of timeslot between 2 exams, but for example an exam at timeslot 9 (friday afternoon) and a second exam at timeslot 12 (monday morning) has a distance of 3 (approximatively 1,5 days), but in fact (in terms of real dates) we have a distance of 5 (approximatively 2,5 days) when counting the sunday.

Is it really necessary to count this or not ? The answer depends on the results we will obtain for big instances.