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 super blood wolf moon of 2019 will take place late on January 20th and/or January 21st, depending on your time zone. Taylor Mead, House Beautiful, "A Super Blood Wolf Moon Is Coming This Month," 4 Jan. 2019 The two-lane highway—commissioned in 1926 and completed in 1938—was the first of its kind in America, an east-west artery linking Chicago to Santa Monica, California via countless rural towns spread across three time zones and eight states. Ashlea Halpern, Condé Nast Traveler, "Long Live Route 66," 19 July 2018 Traveling across multiple time zones is often a cause for jealousy, not compassion. Emily Sohn, Washington Post, "Time-zone changes can leave people worried about jet lag," 7 July 2018 Then there’s the Lumos Smart Sleep Mask, which uses light-flash technology developed by researchers at Stanford University to regulate a user’s circadian rhythm across time zones and combat jet lag. Lindsey Tramuta, Fortune, "How Sleep Became The Ultimate Luxury," 31 May 2018 The vote was a huge logistical undertaking, taking place across Russia's 11 time zones over 22 hours, in around 97,000 polling stations, according to the Central Election Commission. Nathan Hodge And Angela Dewan, CNN, "Vladimir Putin retains grip on Russia, exit polls show," 18 Mar. 2018 Olympic coverage will air live across all time zones every night following primetime and local news. Richard Deitsch, SI.com, "2018 Winter Olympics Media Guide: How to Watch, Changes in Coverage and Everything Else You Need to Know," 8 Feb. 2018 The first White House official to fall after the midterm elections was Ms. Ricardel, who became the unexpected focal point of the White House rivalries while her boss, national security adviser John Bolton, was 13 time zones away. Rebecca Ballhaus, WSJ, "National Security Aide Is Out After Feud With First Lady," 15 Nov. 2018 That fact, combined with crossing four time zones on the way home, could leave some starters needing four to five days to fully recover from the Montreal game. Kevin Baxter, latimes.com, "Galaxy faces extra challenge in trip to Montreal," 20 May 2018

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.

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First Known Use of time zone

1892, in the meaning defined above

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Dictionary Entries near time zone

time was (when)



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Statistics for time zone

Last Updated

13 Jan 2019

Look-up Popularity

Time Traveler for time zone

The first known use of time zone was in 1892

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More Definitions for time zone

time zone


English Language Learners Definition of time zone

: any one of the world's 24 divisions that has its own time

time zone


Kids Definition of time zone

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

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More from Merriam-Webster on time zone

Rhyming Dictionary: Words that rhyme with time zone

Spanish Central: Translation of time zone

Nglish: Translation of time zone for Spanish Speakers

Britannica.com: Encyclopedia article about time zone

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