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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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