Ntp not updating clock

30 May

NTP can usually maintain time to within tens of milliseconds over the public Internet, and can achieve better than one millisecond accuracy in local area networks under ideal conditions.

Other related network tools were available both then and now.These are computers that are synchronized over a network to stratum 1 servers.Often a stratum 2 computer will query several stratum 1 servers.These are computers whose system clocks are synchronized to within a few microseconds of their attached stratum 0 devices.Stratum 1 servers may peer with other stratum 1 servers for sanity checking and backup.