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  2. Time synchronization in North America - Wikipedia

    en.wikipedia.org/wiki/Time_synchronization_in...

    NIST Telephone Time of Day Service: UTC(NIST) + 1-303-499-7111 + 1-808-335-4363; Voice announcement with sync pips. Telephone connection, ear n/a Manual sync only. NIST Automated Computer Time Service (ACTS) +1-303-494-4774 +1-808-335-4721; Windows computer with dialup modem. ntpd with NIST/USNO/PTB Modem Time Services driver; ClockWatch Pro ...

  3. Time server - Wikipedia

    en.wikipedia.org/wiki/Time_server

    A time server is a server computer that reads the actual time from a reference clock and distributes this information to its clients using a computer network. The time server may be a local network time server or an internet time server. The most important and widely used protocol for distributing and synchronising time over the Internet is the ...

  4. Network Time Protocol - Wikipedia

    en.wikipedia.org/wiki/Network_Time_Protocol

    t. e. The Network Time Protocol ( NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable- latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware .

  5. WWVB - Wikipedia

    en.wikipedia.org/wiki/WWVB

    WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST). [ 1] Most radio-controlled clocks in North America [ 2] use WWVB's transmissions to set the correct time. The normal signal transmitted from WWVB is 70 kW ERP and uses a 60 kHz carrier wave yielding a ...

  6. Time and frequency transfer - Wikipedia

    en.wikipedia.org/wiki/Time_and_frequency_transfer

    The NIST provides a time reference service to computer users on the Internet, [5] based on Java applets loaded by each client. [6] The two-way satellite time and frequency transfer (TWSTFT) system being used in comparison among some time laboratories uses a satellite for a common link between the laboratories.

  7. Center for Internet Security - Wikipedia

    en.wikipedia.org/wiki/Center_for_Internet_Security

    The Center for Internet Security ( CIS) is a US 501 (c) (3) nonprofit organization, [ 2] formed in October 2000. [ 1] Its mission statement professes that the function of CIS is to " help people, businesses, and governments protect themselves against pervasive cyber threats ." The organization is headquartered in East Greenbush, New York, US ...

  8. Leap second - Wikipedia

    en.wikipedia.org/wiki/Leap_second

    Screenshot of the UTC clock from time.gov during the leap second on 31 December 2016.. A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between precise time (International Atomic Time (TAI), as measured by atomic clocks) and imprecise observed solar time (), which varies due to irregularities and long-term ...

  9. Standard frequency and time signal service - Wikipedia

    en.wikipedia.org/wiki/Standard_frequency_and...

    Standard frequency and time signal-satellite service (short: SFTSS) is, according to Article 1.54 of the International Telecommunication Union's (ITU) Radio Regulations (RR), [ 2] defined as A radiocommunication service using space stations on earth satellites for the same purposes as those of the standard frequency and time signal service .