Answer: TIMEZONE

Possible questions:


Atlantic or Pacific we know 3 Answers
Mountain, e.g. we know 1 Answer
Mountain or Pacific we know 1 Answer
Pacific, e.g. we know 1 Answer
New York's is Eastern we know 1 Answer
Eastern or Pacific, e.g. we know 1 Answer
China has only one we know 1 Answer
Central or Mountain, e.g. we know 1 Answer
Central or Mountain we know 1 Answer
Alaska or Hawaii we know 1 Answer

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