time zone


Definition of time zone

: a geographic region within which the same standard time is used

Illustration of time zone

Illustration of time zone

time zones in the conterminous United States: A Pacific time, B mountain time, C central time, D eastern time

Examples of time zone in a Sentence

Recent Examples on the Web The Steelers play all 17 games in the Eastern time zone. Ben Volin, BostonGlobe.com, 14 May 2022 Having traveled up to 70% for years before Covid-19, my initial reaction to being in the same time zone and same building and bed was pure gratitude, even bliss. Didem Un Ates, Forbes, 26 Apr. 2022 There are dozens of APIs for things like directions, autocomplete, place details, place photos, street view photos, static maps, dynamics maps, and time zone lookups, which are all continuously racking up your bill. Ron Amadeo, Ars Technica, 30 Mar. 2022 Not too far to the east, not too far to the west in that time zone. NBC News, 20 Mar. 2022 Well, live in the East Coast time zone, maybe, but not here on the West Coast. oregonlive, 16 Mar. 2022 There was just one problem: Imagine living on the western end of a time zone in the middle of winter -- Indiana and especially Michigan. Harry Enten, CNN, 12 Mar. 2022 Eskridge, who, inspired by Adeagbo, would go on to compete in the senior Olympics in 2019, then watched on television as Adeagbo competed in the 2018 Winter Olympics in Pyeongchang, which is 14 hours ahead of Louisville's time zone. Hayes Gardner, The Courier-Journal, 11 Feb. 2022 The Olympics in Tokyo last summer earned a profit for his company, despite many of the same obstacles as this year: lower ratings, the pandemic, an Asian time zone. Washington Post, 9 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'time zone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of time zone

1892, in the meaning defined above

Buying Guide

Our Reviews team has selected the best smart watches.

Learn More About time zone

Time Traveler for time zone

Time Traveler

The first known use of time zone was in 1892

See more words from the same year

Dictionary Entries Near time zone


time zone


See More Nearby Entries 

Statistics for time zone

Last Updated

19 May 2022

Cite this Entry

“Time zone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/time%20zone. Accessed 23 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for time zone

time zone


Kids Definition of time zone

: a geographic region within which the same standard time is used

More from Merriam-Webster on time zone

Nglish: Translation of time zone for Spanish Speakers

Britannica.com: Encyclopedia article about time zone


Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!