There are several ways to make sure you don't miss the due date of a pattern you are testing. Firstly, you should keep an open line of communication with the designer where you get reminders about the due date. We will automatically send you a reminder for an upcoming due date for tests you have not completed yet, assuming the designer has set a due date on their Shop manager. You can also sort patterns by due date on the 'testing' tab on your patterns library. Assuming a due date was set by the designer a 'Due in X days' text will show next to each pattern you are testing.