The island of Guam is a U.S. territory; it's people are U.S. citizens who have the right to vote in our presidential election. However, because they have no representation in the Electoral College, theirs is a straw vote that does not count in the final tally.
Nevertheless, Guam's vote gets headlines because their time zone puts them 15 hours ahead of the U.S. It's already tomorrow there. Guam bills itself as "Where America's Day Begins."
Besides, they open their polls are midnight, so they already have their results. Hillary Clinton was the big winner with 71.6% to Donald Trump's 24.2%.