[noduerme]

How would one timezone work? The sun sets at 8:00 in one place and sets at 20:00 on the other side of the world?

In terms of working or traveling between time zones, it seem like it would be much harder to remember the fact that, for instance, people in New York stop work when the clock says 17:00 and people in LA work until 20:00, than to remember that they are three time zones apart.

[usrusr]

IIRC the more serious proposals for a global time scheme deliberately abandon the old 24:60:60 so that daylight expectations, locally as they would be, would have to be re-learned anyways. Up to that point that doesn't sound that bad to me. But where i don't see any chance is durations, how many seconds/minutes/hours. I suspect that a change to duration units would be even harder to adapt to than metrification of lengths.