What is the difference between due dates and availability dates?
In addition to setting a due date for an assignment, instructors can specify a specific date range that students can submit the assignment. These dates are called availability dates.
View Due Dates
View Availability Dates
Availability dates are the date range where students can submit the assignment or quiz. The first available date is the Available From date, and the last available date is the Until date. After the Until date, students will not be able to submit the assignment or quiz.
Note: If a student starts the quiz but does not finish by the due date, Canvas will automatically submit the quiz on the due date, even if there is a later Until date. However, a student could start the quiz after the due date and will have until the available Until date or the set time limit.
Edit Quiz Details
View Due and Availability Dates
After you save the quiz, view the details of the quiz. The assignment due date displays under the Due heading . The availability dates display under the Available from and Until headings .
If the Until date is after the Due date, students can still submit the assignment, but the assignment will be marked as late.
When students open an assignment with availability dates, they will see the assignment details for when the assignment is due  and available .
If the available date is current, students can submit the assignment or take the quiz.
Gradebook Results of Due and Availability Dates
In the example above, with availability dates from April 11 until April 19, Canvas views and scores the assignment as follows:
- Canvas opens the assignment on the Available date, April 11 at 12am
- The assignment is on time if submitted by the Due date, April 18 at 11:59 pm
- The assignment is marked late in the Gradebook if submitted between the due date and the Until date, April 19 at 11:59 pm
- On April 20 at 12:00 am, Canvas closes the assignment to all student submissions