Statements (15)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
atomic clock system
|
| gptkbp:coordinates |
gptkb:NIST_time_standards
|
| gptkbp:established |
1960s
|
| https://www.w3.org/2000/01/rdf-schema#label |
USNO Master Clock
|
| gptkbp:locatedIn |
gptkb:Washington,_D.C.
|
| gptkbp:operatedBy |
gptkb:United_States_Naval_Observatory
|
| gptkbp:provides |
official time for GPS
official time for the United States government official time for the United States Department of Defense |
| gptkbp:purpose |
maintain and distribute precise time
|
| gptkbp:uses |
cesium atomic clocks
hydrogen maser clocks |
| gptkbp:website |
https://www.usno.navy.mil/USNO/time/master-clock
|
| gptkbp:bfsParent |
gptkb:Master_Clock
|
| gptkbp:bfsLayer |
7
|