File:Usno-amc.jpg

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Summary

The <a href="https://en.wikipedia.org/wiki/US_Naval_Observatory" class="extiw" title="w:US Naval Observatory">US Naval Observatory</a> (USNO) Alternate Master Clock at Schriever Air Force Base, <a href="https://en.wikipedia.org/wiki/Colorado" class="extiw" title="w:Colorado">Colorado</a>. This serves as an alternate to the master clock ensemble at <a href="https://en.wikipedia.org/wiki/United_States_Naval_Observatory" class="extiw" title="w:United States Naval Observatory">USNO</a>, <a href="https://en.wikipedia.org/wiki/Washington,_D.C." class="extiw" title="w:Washington, D.C.">Washington, D.C.</a>, to determine the time standard for the United States Department of Defense, and also contributes to the international atomic time standard <a href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time" class="extiw" title="w:Coordinated Universal Time">UTC</a>. It consists of an ensemble of <a href="https://en.wikipedia.org/wiki/Caesium_standard" class="extiw" title="w:Caesium standard">caesium beam atomic clocks</a> which are all compared with each other to keep them synchronized. It serves as a Stratum 0 time server for the <a href="https://en.wikipedia.org/wiki/Network_Time_Protocol" class="extiw" title="w:Network Time Protocol">Network Time Protocol</a> (NTP).

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	23:36, 8 January 2017		1,120 × 744 (861 KB)	127.0.0.1 (talk)	The <a href="https://en.wikipedia.org/wiki/US_Naval_Observatory" class="extiw" title="w:US Naval Observatory">US Naval Observatory</a> (USNO) Alternate Master Clock at Schriever Air Force Base, <a href="https://en.wikipedia.org/wiki/Colorado" class="extiw" title="w:Colorado">Colorado</a>. This serves as an alternate to the master clock ensemble at <a href="https://en.wikipedia.org/wiki/United_States_Naval_Observatory" class="extiw" title="w:United States Naval Observatory">USNO</a>, <a href="https://en.wikipedia.org/wiki/Washington,_D.C." class="extiw" title="w:Washington, D.C.">Washington, D.C.</a>, to determine the time standard for the United States Department of Defense, and also contributes to the international atomic time standard <a href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time" class="extiw" title="w:Coordinated Universal Time">UTC</a>. It consists of an ensemble of <a href="https://en.wikipedia.org/wiki/Caesium_standard" class="extiw" title="w:Caesium standard">caesium beam atomic clocks</a> which are all compared with each other to keep them synchronized. It serves as a Stratum 0 time server for the <a href="https://en.wikipedia.org/wiki/Network_Time_Protocol" class="extiw" title="w:Network Time Protocol">Network Time Protocol</a> (NTP).

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