No, it is not possible to earn a certificate in a course session that has ended. To earn a certificate you will have to upgrade to the verified track by the course upgrade deadline, and reach a passing score before the course end date.
Where is the end date posted?
On the course homepage, you can find the end date under Important Dates labelled Course ends.
On the Dates tab, you can find it listed on the bottom.
Where's the course homepage?
To navigate to the course homepage from your dashboard, click the title of the course.
To navigate to the course homepage from any page within the course, click the Course tab in the course's navigation menu.
Where's the Dates tab?
To navigate to the dates tab, from any page within the course, click the Dates tab in the course's navigation menu.