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The NTP pool is a dynamic collection of networked computers that volunteer to provide highly accurate time via the Network Time Protocol to clients worldwide. The machines that are "in the pool" are part of the pool.ntp.org domain as well as of several subdomains divided by geographical zone and are distributed to NTP clients via round-robin DNS.
This implementation is used by Google (both internally and on their public NTP servers), Amazon AWS, [68] and Facebook. [69] chrony supports leap smear in smoothtime and leapsecmode configurations, but such use is not to be mixed with a public NTP pool as leap smear is non-standard and will throw off client calculation in a mix. [70]
The time reference used by a time server could be another time server on the network or the Internet, a connected radio clock or an atomic clock. The most common true time source is a GPS or GPS master clock. Time servers are sometimes multi-purpose network servers, dedicated network servers, or dedicated devices. All a dedicated time server ...
UTC (variant depends on server's time source) ClockWatch Pro for Windows [22] 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 ...
Western Indonesia Time (Waktu Indonesia Barat, WIB) is seven hours ahead of the Coordinated Universal Time (UTC), used in the islands of Sumatra, Java, and the western half of Kalimantan. Central Indonesia Time ( Waktu Indonesia Tengah , WITA) is eight hours ahead ( UTC+08:00 ), used in the eastern half of Kalimantan, as well as all of Bali ...
A host connects to a server that supports the Time Protocol on port 37. The server then sends the time as a 32-bit unsigned integer in binary format and in network byte order, representing the number of seconds since 00:00 (midnight) 1 January, 1900 GMT, and closes the connection. Operation over UDP requires the sending of any datagram to the ...
Due to excessive bandwidth usage, averaging upwards of 20 GB / day, it has become necessary to direct external usage to public time server pools, such as ch.pool.ntp.org. Misuse, caused mostly by IT-providers synchronizing their client infrastructures, has made unusually high demands on network traffic, thereby causing ETH to take effective ...
The ntpd program is an operating-system daemon that sets and maintains a computer system's system time in synchronization with Internet-standard time servers.It is a complete implementation of the Network Time Protocol (NTP) version 4, but retains compatibility with versions 1, 2, and 3 as defined by RFC 1059, RFC 1119, and RFC 1305, respectively. ntpd performs most computations in 64-bit ...