Do you know when they need to have started providing service there at the latest? They began providing service at higher latitude earlier because that is where

Do you know when they need to have started providing service there at the latest? They began providing service at higher latitude earlier because that is where the satellites "lump" due to their inclination, so that they needed fewer satellites in total. They are also required to cover Alaska and have now started launching Starlink satellites into (near-)polar orbits. If these are test sats or actually operational I do not know but they seem to be working on these issues. All in all they seem to be following a launch-early strategy.