If you are using ExpressVPN. Force Stop it in “Manage Applications”. Clear the data and cache. Then restart. Your time will update, or should. Good luck. The VPN auto starting when you turn everything on might beat your settings behind the scenes and confuses the network time settings inside the Firestick software.
I’m having same issue with date and time displayed. Today showing June 28 and 12 hours off. I have no VPN. It just started with incorrect time 2 weeks ago. I have a fire tv. I have 8 other devices and this is only one with this issue. Have tried every trouble shoot possible. Please advise of fix or how I can have device replaced