Every course on edX.org, including those which are self-paced will have an end date. To earn a certificate on the verified track you will need to have a passing score by the end date.
You can find the course end date:
- On the course enrollment page, if the course is ending this year
- On your dashboard listed below the course title
- On the course homepage under Important Dates
- Under the course Dates tab
Read more: When does my course start and end?