Overdues - again

We need to clear up some confusion about receiving overdue notices on Monday about DVDs that you are told are due back on Monday.
DVDs are day loan material, which means they are due back on the following day. You borrow them on a Monday, they are due back on a Tuesday. You borrow them on a Tuesday, they are due back on a Wednesday and so on. Our library management system is therefore programmed to think that DVDs borrowed on a Friday are due back on a Saturday, so on our system they are due back on a Saturday. Because we love you so much (yes, it's true) we let you keep DVDs borrowed on a Friday until Monday. Who wants to come into the library on a weekend if they don't have to? Come Monday however, our system sees them as overdue, and as we have automated our overdue process, you see the email. Like the previous entry on overdues, below, don't worry about it (so long as you return your DVDs on Monday). We'll look into a fix for this though