Get the latest tech news

Atomic time source failure at NIST Gaithersburg campus


Dear colleagues, On Saturday, 6 December 2025 at approximately 21:13 UTC, the atomic time source (a single cesium beam atomic clock) for all the internet time servers at the NIST Gaithersburg campus failed and exhibited a time step of approximately -10 ms. The affected servers are: Coincidentally, there were unexplained failures in more than one co-located resource, including some used for monitoring and control.

None

Get the Android app

Or read this on Hacker News

Read more on:

Photo of NIST Gaithersburg

NIST Gaithersburg