Seamus Blackley (@seamus.bsky.social)

The atomic clocks in Boulder are back in service. But they could be as much as 5 microseconds off! That's no big deal for transmitting time on the internet, where millisecond irregularities are common. But it'd be 5000 times the usual nanosecond errors! groups.google.com/a/list.nist....

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Update on Boulder Internet Time Services and atomic time scale https://groups.google.com/a/list.nist.gov/g/internet-time-service/c/OHOO_1OYjLY