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An Acronym for Network Time Protocol.

A method for synchronising a computer's internal clock (and system time) with an external source, such as a computer with a more accurate clock.

Machines that are synchronised with an atomic clock or GPS are stratum 1. Machines that synchronise to these machines are stratum 2, and so on. Normally stratum 1 machines aren't available for public connections.

Here are some ntp servers in NewZealand that you can synchronise against:

  1. truechimer.waikato.ac.nz (stratum 2?)
  2. ntp.massey.ac.nz (stratum 2)

and others you can find on pages such as http://www.eecis.udel.edu/mills/ntp/clock2a.html.

Related pages: HowToClock?, HowToTimePrecisionHOWTO?, ntpd(1), ntpdate(1), hwclock(8)