Like I get that 12AM is a new day, but if timezones go up by one hour every zone, that means that at one point, there’d be two next to each other who are on different days, right?
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Yes, there must be a pair that changes date beyween them, it’s called the “International Date Line” for that reason. However does not exactly follow the line of 180° longitude as countries near it were allowed to choose which side to be on.
It’s where it is because a major international conference in Washington in 1884 decided for a number of reasons to make Greenwich in London the zero degree origin of the longitude scale. One of those was so the date line was in the Pacific and didn’t go through a land mass, which would have made things difficult for people living there.
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