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NIST tried to pull the pin on NTP servers after blackout caused atomic clock drift

ID: 760ade28-efe8-563b-bfac-95f078c015de

STIX ID: report--760ade28-efe8-563b-bfac-95f078c015de

Feed Name: The Register (Security)

Date Published: 2025-12-21

Date Updated: 2026-04-26

Author: Simon Sharwood

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Severe storms and a prolonged power outage at NIST’s Boulder campus disrupted the atomic ensemble time scale, degrading the accuracy of the Boulder Internet Time Service (NTP). With generator issues and limited site access, NIST reported a < 4.8us clock error and advised users, including telcos and aerospace organizations, to switch to alternative NIST time sources, underscoring best practice to configure multiple NTP servers for resilience.

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