1. What Is an Atomic Clock? | NASA

    https://www.nasa.gov/feature/jpl/what-is-an-atomic-clock/

    The clock is ticking: A technology demonstration that could transform the way humans explore space is nearing its target launch date of June 24, 2019. Developed by NASA's Jet Propulsion Laboratory in Pasadena, California, the Deep Space Atomic Clock is a serious upgrade to the satellite-based atomic clocks that, for example, enable the GPS on ...

  2. National Institute of Standards and Technology | NIST

    https://time.gov/

    The National Institute of Standards and Technology - Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.

  3. Atomic Clock - Wall Clocks - Clocks - The Home Depot

    https://www.homedepot.com/b/Home-Decor-Clocks-Wall-Clocks/Atomic-Clock/N-5yc1vZbbzuZ1z1s9aw

    Check out the Atomic Full Calendar Digital Clock with Extra Large Digits - Perfect Gift for the Elderly. What is the best-rated product in Wall Clocks? The best-rated product in Wall Clocks is the 12 in. Atomic Analog Metal Wall Clock. Can Wall Clocks be returned? Yes, Wall Clocks can be returned and have a 90-Day return period.

  4. Buy Atomic Clocks Online | Untied States | Atomic Clock Sale

    https://atomic-clocks.com/

    Atomic Clocks Online is an online seller of self-settings since 1999. We offer a wide selection of atomic clocks at discount prices.

  5. Current International Atomic Time — TAI

    https://www.timeanddate.com/worldclock/other/tai

    TAI is a highly precise time scale that is calculated using data from about 400 atomic clocks housed in 69 laboratories around the world. It was established and is maintained by the Bureau International des Poids et Mesures (BIPM), France and it forms the basis for UTC.