I think switching days in the middle of the workday is the single biggest good argument for time zones. When lunch is is something you’d get used to quick. Havi

I think switching days in the middle of the workday is the single biggest good argument for time zones. When lunch is is something you’d get used to quick. Having it be Monday before lunch and Tuesday after would be a head F*. It would also screw with date calculations in a big way. Having the whole of North America on one big time zone would be fairly easy. This is basically what China does.