What external NTP time servers are available for synchronization?
Many methods exist for synchronizing a computer’s clock. External time servers allow users to synchronize computer clocks by means of dial-up, network, and radio links. NIST, the National Institute of Standards and Technology, located in Boulder, Colorado, provides the Automated Computer Time Service (ACTS), which can set a computer clock with an uncertainty of less than 10 milliseconds. The U.S. Naval Observatory (USNO) Time Service Department in Washington D.C. is another source for accurate time synchronization in the United States. Many other sites exist throughout the world that can be used for time synchronization. To find them, run a search for “time synchronization” on the Internet.
