The problem of differing local times could be solved across larger areas by synchronizing clocks worldwide, but in many places that adopted time would then differ markedly from the solar time to which people were accustomed.
Kohalike kellaaegade erinevused suurte vahemaade korral oleks võinud lahendada, sünkroonides kõik kellad ülemaailmselt, aga paljudes kohtades erinenuks siis kohalik aeg oluliselt päikeseajast, millega inimesed olid juba harjunud.