The Line Islands are +14 GMT. That's over a half a day (You know, those things based on the earth's rotation period so that any point to should +/- 12 hours of any other spot on the planet). I mean, I could see if these islands were the last thing before open water for several hours, but it does not exist. There are Islands to the northeast of these that are -11 GMT. Crazy.
Check it out here: http://en.wikipedia.org/wiki/File:Standard_time_zones_of_the_world.png