When using grading periods, an assignment with no due date defaults to the last grading period. How do you politely ask a professor for more time on an assignment or test grade without sounding like you're complaining about their workload?It's a written assignment that is due at the end of term and is essentially a chance for them to demonstrate their understanding of the content. Canvas does require a date and time together. You do not have to specify the time, but if you leave it off, it defaults to either the start or end of the day. Instructors control the due dates and availability dates of assignments. Changes can be made for your entire class or only for select students. The secret is to be as efficient as possible. So, keep calm, find out exactly what you need to do, plan, research properly and don't waffle. You can set availability and due dates for an assignment and schedule their visibility.