Assignment availability may be adjusted to fit very specific dates/times, and even specific dates times for only certain individuals.
Navigate to the desired assignment(within the assignment area or within a module) and hover your mouse over of title. You should see a small context menu circle appear next to the title, click this and select "Edit"
- "Display After" controls at which date/time the assignment will become visible to students and they are allowed to start making submissions.
- "Display Until" controls at which date/time the assignment will no longer be visible to students and they may no longer make submissions.
- "Due Date", past this date/time the system will start counting submissions as late. Usually, the Due Date and Display Until date are the same. (NOTE: If the "Display Until" box is not checked students will be able to submit past the due date, however, the items will be tagged as late in the grading area).