"Urumqi simply adjusted their operation schedules to reflect natural waking hours, therefore, a store may be open from noon to 10 PM." This is exactly why I would propose a single timezone for the entire world. Time notation is just numbers, after all. Why we still attach importance to having 12pm appear at the middle of the day boggles my mind. Why can't we just have different parts of the world start at different s…
For global communication, it helps to form a mental model of the other side. When you pick up the phone to call someone else, knowing it's 1am there would typically indicate you should likely think twice before calling. It's a crutch to enable a more convenient mental model for most people to relate to what time of day it is 'over there'. Otherwise, sure, there's no real point.
"office hours are 22-6 UTC" would be much simpler than "office hours are 9-5 EST. hmm ...is that european standard time, or east coast of the usa?"
death to timezones and daylight savings!