It looks like they are planning a blackout. Just like when your computer is running slow with too many apps and pages running, it needs a clear out. To upgrade the system the old system needs shut down and rebooted. The fact that this is planned and the BBC has a script running in the background as an Emergency Broadcast during the event. Propaganda Machine instructing the masses during the transition. If it does happen, it will happen for 3 days at the most. This is because they need the New System up and running and it won't take too long for the switch over. Like going from Analog to Digital. Ignore all broadcasts, this is when they know people will be panicking and they will use it to their advantage. There will be no power, no Internet and no mobile phone service. Have enough supplies to last you for a good few days, keep an eye on the neighbors and watch out for each other. Keep doors locked and secure especially at night time and wait for it to all boot back up. The most important thing is don't panic!! This is all planned so you should have a plan too. My plan is to enjoy the Silence. https://vxtwitter.com/JamesPS77/status/2119702452278587442