I think you missed entire point of operation. If everywhere runs on UTC, they will still have different times when people are working/not working/sleeping so y

I think you missed entire point of operation. If everywhere runs on UTC, they will still have different times when people are working/not working/sleeping so you still have to look something up and figure it out. With time zones, you look up "What time is it?", realize it's 4:30AM and since most people around the world follow similar schedule, you quickly realize he's fast asleep.