Hasty Briefsbeta

Atomic time source failure at NIST Gaithersburg campus

2 days ago
https://groups.google.com/a/list.nist.gov/g/internet-time-service/c/Zd7VaR-vqV4?pli=1
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  • #server failure
  • #time synchronization
  • #NIST
  • Atomic time source at NIST Gaithersburg failed on 6 December 2025, causing a -10 ms time step.
  • Affected servers include time-a-g (OS shutdown) and time-f-g (NTP service suspended).
  • Other servers continue operating as the time offset hasn't triggered their 'unhealthy' response.
  • A backup clock is available; replacement planned for 9 December 2025 with brief service disruption.
  • Servers at Boulder and WWV/Ft. Collins campuses remain unaffected.
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