Due dates allow you to set a specific date when the task needs to be completed.
A task can have only one due date, and it becomes overdue once the date has passed.
If a task doesn't have a due date, it is displayed on the task panel as due "today" and remains so until completed.
If a task is overdue, it is displayed as "overdue" on the task panel and in project until it is completed.
The due date for a task can be changed at any time.