First, when you release an assignment you can choose a deadline for when the students should hand in their texts. You can also decide how many days after the deadline the students are able to hand in the assignment. It is possible for the students to hand in late if you allow it. However, if they forget to hand in and the deadline has passed it is not possible to hand in Edword.
After your students have handed-in, you can check the date and time of the hand-in, to ensure they met your deadline.