@airvice Feel free to contact Just Flight Support and see if they have any ideas in their knowledge database. I suspect they will come back to me, though. I'm not sure what to say, because I can't reproduce this, and if the GMT is wrong, then it seems to be an issue at the simulator level, since that variable is read directly. Maybe others have seen this behavior with the GMT in MSFS 2024 before, and might have some ideas?