Simplify the following text for a Grade 10 native English-speaking person.
Original: In the South Pacific , the date line also lies east of 180 Â , so that Wallis and Futuna , Fiji , Tonga , and New Zealand 's Kermadec Islands and Chatham Islands have the same date , but Samoa and New Zealand 's Cook Islands are one day earlier .
Simplified: In the South Pacific the date line swings east such that Wallis and Futuna , Fiji , Tonga , and New Zealand 's Kermadec Islands have the same date but Samoa is one day earlier .