Iceland and the Falklands would likely be respectively -9 and +12 from Japan. Greenland is probably the best reason to keep Greenwich as the reference time zon

Iceland and the Falklands would likely be respectively -9 and +12 from Japan. Greenland is probably the best reason to keep Greenwich as the reference time zone. :) Most of the population (so to speak) is on -13 to -12. I have no idea if the people there have more ties to continental Europe and Iceland, or to Labrador.