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1. www.time.govNational Institute of Standards and Technology | NIST

   www.time.gov

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   UTC is always displayed as a 24-hour clock. NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

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     The National Institute of Standards and Technology - Time...

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2. time.is › United_StateTime in United States now

   time.is › United_State

   Vor 6 Tagen · Time.is displays exact, official atomic clock time for any time zone (more than 7 million locations) in 57 languages.

3. time.isTime.is - exact time, any time zone

   time.is

   Vor 5 Tagen · Time.is displays exact, official atomic clock time for any time zone (more than 7 million locations) in 57 languages.

4. en.wikipedia.org › wiki › Atomic_clockAtomic clock - Wikipedia

   en.wikipedia.org › wiki › Atomic_clock

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   Atomic clocks are used to broadcast time signals in the United States Global Positioning System (GPS), the Russian Federation's Global Navigation Satellite System (GLONASS), the European Union's Galileo system and China's BeiDou system.

5. www.nist.gov › atomic-clockAtomic Clocks - NIST

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   For three-quarters of a century, scientists have used nature’s perfect timekeepers — atoms — to build the best clocks the world has ever seen. Atomic clocks have revolutionized how we tell time. These astoundingly accurate devices touch the lives of every person on Earth and keep us in sync no matter where we are.

6. www.nasa.gov › what-is-an-atomic-clockWhat Is an Atomic Clock? - NASA

   www.nasa.gov › what-is-an-atomic-clock

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   19. Juni 2019 · Atomic clocks combine a quartz crystal oscillator with an ensemble of atoms to achieve greater stability. NASA’s Deep Space Atomic Clock will be off by less than a nanosecond after four days and less than a microsecond (one millionth of a second) after 10 years. This is equivalent to being off by only one second every 10 million years.

7. time.gov › webNIST TIME

   time.gov › web

   Official UTC (NIST) Time.