time zone
US /ˈtaɪm zoʊn/
UK /ˈtaɪm zoʊn/

1.
zona horaria
any of the 24 longitudinal divisions of the world, each having its own standardized time
:
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New York is in a different time zone than Los Angeles.
Nueva York está en una zona horaria diferente a la de Los Ángeles.
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When you travel across multiple time zones, you might experience jet lag.
Cuando viajas a través de múltiples zonas horarias, podrías experimentar jet lag.