Coordinated Universal Time
noun
: the international standard of time that is kept by atomic clocks around the world
—abbreviation UTC
compare greenwich mean time, universal time
Examples of Coordinated Universal Time in a Sentence
Recent Examples on the Web
And while the shower will go on for several days, the peak is predicted to come on October 8, beginning at around 19:00 UTC (Coordinated Universal Time), or 15:00 ET.
—
Rachael O'Connor, MSNBC Newsweek, 6 Oct. 2025
In Coordinated Universal Time, or UTC, the eclipse will begin at 15:28 Sept. 7 and end at 20:55 Sept. 7, according to NASA.
—Melina Khan, USA Today, 6 Sep. 2025
In Coordinated Universal Time, or UTC, the eclipse will occur throughout the day on Sept. 7.
—Marina Johnson, Louisville Courier Journal, 5 Sep. 2025
The clocks are also capable of measuring in billionths of a second, or nanoseconds, which are synchronized globally to Coordinated Universal Time (UTC).
—James Powel, Freep.com, 5 Aug. 2025
Altogether, these clocks decide Coordinated Universal Time (UTC), the global system for measuring time.
—Jack Knudson, Discover Magazine, 29 Apr. 2025
As such, the ISS operates on Coordinated Universal Time, UTC, also known as Greenwich Mean Time (GMT).
—Josh Dinner, Space.com, 8 Feb. 2025
The law firm explained the time shown is in Coordinated Universal Time, which is 8 hours ahead of Pacific Time, or January 7 at 6:10 p.m.
—Michelle Watson, CNN, 27 Jan. 2025
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Rachael O'Connor, MSNBC Newsweek, 6 Oct. 2025
In Coordinated Universal Time, or UTC, the eclipse will begin at 15:28 Sept. 7 and end at 20:55 Sept. 7, according to NASA.
—Melina Khan, USA Today, 6 Sep. 2025
In Coordinated Universal Time, or UTC, the eclipse will occur throughout the day on Sept. 7.
—Marina Johnson, Louisville Courier Journal, 5 Sep. 2025
The clocks are also capable of measuring in billionths of a second, or nanoseconds, which are synchronized globally to Coordinated Universal Time (UTC).
—James Powel, Freep.com, 5 Aug. 2025
Altogether, these clocks decide Coordinated Universal Time (UTC), the global system for measuring time.
—Jack Knudson, Discover Magazine, 29 Apr. 2025
As such, the ISS operates on Coordinated Universal Time, UTC, also known as Greenwich Mean Time (GMT).
—Josh Dinner, Space.com, 8 Feb. 2025
The law firm explained the time shown is in Coordinated Universal Time, which is 8 hours ahead of Pacific Time, or January 7 at 6:10 p.m.
—Michelle Watson, CNN, 27 Jan. 2025
Cite this Entry
“Coordinated Universal Time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Coordinated%20Universal%20Time. Accessed 20 Dec. 2025.
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