Check Time and Frequency Division | NIST Online

The 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... visit the most interesting Tf NIST pages, well-liked by users from USA and China, or check the rest of data below. is a web project, safe and generally suitable for all ages. We found that English is the preferred language on Tf NIST pages. Their most used social media is StumbleUpon with about 99% of all user votes and reposts. uses Apache HTTP Server.

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  • NIST Internet Time Service

    The table below lists the time servers used by the NIST Internet Time Service (ITS). The table lists each server's name, IP address, and location, organized geographically within the US from North to ...

  • A Brief History of Atomic Clocks at NIST

    1945 -- Isidor Rabi, a physics professor at Columbia University, suggests a clock could be made from a technique he developed in the 1930's called atomic beam magnetic resonance. 1949 -- Using Rabi’s...

  • NIST - Time and Frequency Redirect Page

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