Department of Defense master clock
type: Thing
description: atomic master clock for the U.S. Department of Defense
additional property: PropertyValue
  property ID: P17
  value: United States
additional property: PropertyValue
  property ID: P18
  value: Usno-mc.jpg
additional property: PropertyValue
  property ID: P31
  value: atomic clock
additional property: PropertyValue
  property ID: P31
  value: display device
additional property: PropertyValue
  property ID: P31
  value: geographic entity
additional property: PropertyValue
  property ID: P373
  value: Department of Defense master clock
additional property: PropertyValue
  property ID: P646
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additional property: PropertyValue
  property ID: P1366
  value: U.S. Naval Observatory Alternate Master Clock
additional property: PropertyValue
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additional property: PropertyValue
  property ID: P11693
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confidence:
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    score pct: 0
    tier: long_tail
    components:
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      sitelinks norm: 0.005
      unique citations: 0
      unique citations norm: 0.0
      monthly pageviews: 93
      monthly pageviews norm: 0.0
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  unique citations: 0
  monthly pageviews: 93
  yearly pageviews: 154
  pageview trend:
    m: 2026-08
    v: 93
  pageview trend:
    m: 2026-07
    v: 23
  pageview trend:
    m: 2026-06
    v: 11
  pageview trend:
    m: 2026-05
    v: 5
  pageview trend:
    m: 2026-04
    v: 22
  popularity:
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    max: 423
    pct: 0.5
  tier: long_tail
claims:
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    value: Q30
    source count: 1
    confidence: 0.2
    value label: United States
  P18:
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  P31:
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    value label: atomic clock
  P31:
    value: Q327065
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    value label: display device
  P31:
    value: Q27096213
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    value label: geographic entity
  P373:
    value: Department of Defense master clock
    source count: 0
    confidence: 0.0
  P646:
    value: /m/0b7wy
    source count: 0
    confidence: 0.0
  P1366:
    value: Q125522742
    source count: 0
    confidence: 0.0
    value label: U.S. Naval Observatory Alternate Master Clock
  P6366:
    value: 2777910194
    source count: 0
    confidence: 0.0
  P11693:
    value: 11729255970
    source count: 0
    confidence: 0.0
meta:
  wikidata id: Q5260243
  domain: atomic_clock
  level: standard
  html url: https://4ort.xyz/entity/department-of-defense-master-clock
  markdown url: https://4ort.xyz/entity/department-of-defense-master-clock.md
  facts url summary: https://4ort.xyz/entity/department-of-defense-master-clock/facts.json
  facts url standard: https://4ort.xyz/entity/department-of-defense-master-clock/facts.json
  facts url full: https://4ort.xyz/entity/department-of-defense-master-clock/facts.json
  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-26T09:56:27.829940Z
  entity updated at: 2026-05-03T23:45:09.469384+00:00Z
  entity created at: 2026-03-05T13:38:31.208547+00:00Z