How to Bulk Update Assignment Due Dates

As an instructor, you have the option to update several assignment due dates in the same place; here is how:

In the Course Navigation, open Assignments.
Next click the options icon.
Click Edit Assignment Dates.

4. All graded items in your course (such as assignments, discussion, quizzes, etc) are listed here wit their current assignment due dates. You can edit when the assignment is due, available and available until.
5. Notice: you can also edit individual students due dates if they have been added as an exception.
6. If you wish to undo changes to a due date, click the X on the right side of it.

Shift several dates at once/remove several dates at once

Select multiple assignments with due dates you wish to either shift or remove completely.
Click Batch Edit.
If you wish to shift dates select the first option.
Select how may days you wish you shift the due dates
forward. (Notice: you cannot shift due dates backwards.)
If you wish to delete the selected due dates, click the second option.

Click Ok to continue.

Once you are satisfied with the updated due dates, don't forget to click Save at the top of the page. Wait until the save progress is finished before exiting page.