You can view the available lab exam dates by location on the lab exam registration tool: https://learningservices.nokia.com/src/xreg/ .
Once you select the exam you would like to schedule, a drop down menu of locations will appear. You can select each location and view the available exam dates by selecting the calendar icon as seen in the screen capture below:
For information about the lab exam registration process, please review the following article: How do i register and pay for a lab exam ? – Nokia Learning Services