Exactly this. What frustrates me about arguments for contemporary timekeeping is that there is some inherent simplicity to having a big arbitrary insane map of

Exactly this. What frustrates me about arguments for contemporary timekeeping is that there is some inherent simplicity to having a big arbitrary insane map of time in different places on Earth that is constantly changing and has no fundamental rules. You need additional information than the timezone they live in to call your neighbor on the phone much less someone living in a country halfway around the world.