Actually it's a complicated process. You have to take the total amount of people who ask if we live in grass huts, divided by the amount of time it takes for someone to finally realize that just because we live on an island, doesn't mean everything is withing walking distance, add to that the distance between each island (but only on the days when someone suggests you just drive to a location which is not on your island) and finally, multiply by the total weight of each knee-high sock and sandal wearing tourist on the beach.
And then you get the local time.
~Yukio