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time zone

noun [C]
 
 

Definition

one of many equal parts into which the world is divided. In any place within each part, the particular point in the day is the same, and is an hour in front of or behind that in the parts on either side: If you go from New York to London, you cross five time zones.Maps and map-making
(Definition of time zone noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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