public override void AddDay(Time start)
{
Arrival = Arrival.MakeAfterByAddingADay(start);
WorkingArrival = WorkingArrival.MakeAfterByAddingADay(start);
Departure = Departure.MakeAfterByAddingADay(start);
WorkingDeparture = WorkingDeparture.MakeAfterByAddingADay(start);
}