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English definition of “time zone”

time zone

noun [C]    
one of the twenty-four parts into which the world is divided . The time in each zone is one hour earlier than in the zone east of it, and one hour later than in the zone west of it: Managing your work from afar can be very difficult , especially if you're in a different time zone . The site includes updated TV schedules for each US time zone .
(Definition of time zone noun from the Cambridge Business English Dictionary © Cambridge University Press)
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