Stamina regenerates 1 point every 5 minutes, which means regenerating 200 stamina points from 0 would take a total of 16 hours and 20 Minutes. This will take a little longer if your stamina is below the 0 from committing them to raids. In a full day (24 Hours), players can regenerate a total of 288 stamina points.
What is the rate at which stamina regenerates?
