While Blackboard has had a calendar feature for a long time now, the new Ultra experience makes it easier to use and access. In the calendar you will find
Office hours. These appointments appear automatically on the calendar when an instructor adds them to a course. Due dates. Assignment due dates appear automatically on your calendar.
You can also easily share your calendar with other applications, such as incorporating you BB Learn calendar into your Google Calendar.
Once you have your share link, go to Google Calendar.
Blackboard Help page for the Ultra Calendar