The word "due" means something that is expected or should happen at a particular time. It refers to when something is owed or scheduled to occur. Full definition
Any change in due dates now must be matched by a change in billing date. (think-creditcards.com)
Keep in mind there is no substitute for due diligence in helping make your hiring process more effective. (proformascreening.com)
The decline in the occurrence of civil war over the last two decades is substantial, and likely due in part to concerted international conflict management efforts. (blog.politics.ox.ac.uk)