Using UCT as a world-wide system

The switch to universal time has already taken place. Pilots and air traffic controllers in the U.S. rely on universal time. So do financial traders who deal across time zones. The internet essentially runs on universal time.

The switch to universal time may cause initial disruption. People say, 'if we went universal time, that would mean we'd have to open businesses when it's dark outside.' In reality, your business would go on with the sun, as usual.