I genuinely don't see a difference between looking up an unknown timezone, and looking up a 'part of day offset'. As it stands I need to look up an overseas tim

I genuinely don't see a difference between looking up an unknown timezone, and looking up a 'part of day offset'. As it stands I need to look up an overseas timezone and then figure out the offset from my timezone. With a universal time, I would instead lookup a 'part of day' offset to know if it is okay to call/schedule a meeting. But the benefit is that the overall system is far simpler - Time no longer has alternate interpretations. And for semi-local contexts, you already know that the next state over, or the other side of the country is one or two hours ahead/behind - the same as today. And mostly the mental model people use for long distances works similarly to universal time anyway - I know my time, and after a few interactions, I know an 'offset' to their timezone. Though, I guess the real bummer would be being in a 'part of day' zone where the date changes in the middle of the workday... ha