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Time Protocol Network Time Protocol: pool.ntp.org: Computer with NTP client that syncs at least once an hour. ntpd, sntp, ntpdate: Meinberg NTP [23] NetTime [24] ToyNTP [16] BktTimeSync by IZ2BKT [17] NTPSec Precision Time Protocol: Domain Time II [25] NIST Telephone Time of Day Service [26] UTC(NIST) + 1-303-499-7111 + 1-808-335-4363; Voice ...
The Daytime Protocol is a service in the Internet Protocol Suite, defined in 1983 in RFC 867 by Jon Postel. It is intended for testing and measurement purposes in computer networks. A host may connect to a server that supports the Daytime Protocol on either Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port 13. The server ...
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distributing and synchronising time over the Internet is the Network Time Protocol (NTP), though other less-popular or outdated time protocols continue in use. A variety of protocols are in common use for sending time ...
Xinjiang Time Canonical +06:00 +06:00 +06 asia The Asia/Urumqi entry in the tz database reflected the use of Xinjiang Time by part of the local population. Consider using Asia/Shanghai for Beijing Time if that is preferred. RU: Asia/Ust-Nera: MSK+07 - Oymyakonsky Canonical +10:00 +10:00 +10 europe LA: Asia/Vientiane: Link † +07:00 +07:00 +07 ...
More complete synchronization systems, although lacking NTP's data analysis and clock disciplining algorithms, include the Unix daemon timed, which uses an election algorithm to appoint a server for all the clients; [19] and the Digital Time Synchronization Service (DTSS), which uses a hierarchy of servers similar to the NTP stratum model.
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.
Precision Time Protocol (PTP) is a widely adopted protocol for delivery of precise time over a computer network. A complete PTP system includes PTP functionality in network equipment and hosts. PTP may be implemented in hardware, software or a combination of both. PTP is implemented in end systems and in PTP-aware networking hardware.
NIST physicists Steve Jefferts (foreground) and Tom Heavner with the NIST-F2 cesium fountain atomic clock, a civilian time standard for the United States. NIST-F2 is a caesium fountain atomic clock that, along with NIST-F1, serves as the United States' primary time and frequency standard. [1] NIST-F2 was brought online on 3 April 2014. [1] [2]