Also, no mention of the need for only 10 big-ass time zones instead of 24 relatively narrow time zones. The continental US might have only 2 time zones instead of 4.
This is already the case, timezones have weird shapes and some of them are huge.
In Europe and China you have timezones spanning over 3 "sun" timezones. In practice that means the sun rising and setting at different times. People are used to have the sun setting late or rising early depending where they live.