Mark your Calendars : US/United States to Test its Emergency Broadcast System on Wednesday, October 4th, 2023, on Cellphones, Radios & TVs Nationwide at/@ between 2:20-2:50p ET/14:20-14:50 Military Time in Eastern Time Zone/ET , the Message to be Displayed on ALL Devices & Told on Radio is : “This is only a test No action is required by the public”