The military does. It's called - or used to be called - zulu time. It's only used by guys who -must- use it. Air plane drivers, strategic guys, comm center o

The military does. It's called - or used to be called - zulu time. It's only used by guys who -must- use it. Air plane drivers, strategic guys, comm center operators. Everyone else uses the local time. I suspect if UTC / zulu were really the bee's knees some general would mandate everyone use it. Heck, they got me - a dumb American from the sticks - to think in metric pretty easily. UTC would be a breeze.