The nation of Samoa moved west across the International Date Line at the end of 2011, which propelled it 24 hours ahead of American Samoa. (It's 25 hours ahead in the summer, because it follows Daylight Savings Time, whereas American Samoa doesn't.) The switch was made for economic reasons, as Australia and New Zealand are Samoa's biggest trade partners.
When Time Zones Get Weird
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Key Facts In This Video
China should have five different time zones, but it only has one—all of China runs on Beijing time. 01:29
Nepal uses a time zone of UTC plus 5 hours and 45 minutes. 03:23
There are only 70 km between Samoa and American Samoa, but the islands have a 24-hour time difference. 07:13