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US Timekeeping Slows by 4.8 Microseconds, Scientists Explain Impact

Due to a storm in Colorado, the United States' time has fallen behind the rest of the world by 4.8 microseconds. This technical glitch has raised concerns about major threats to GPS, banking, and defence systems.

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Dec 23, 2025
US Timing (Image: Freepik)

The United States, which dictates the world's time, has itself fallen slightly behind in the race against time. A recent incident has caused sleepless nights for scientists and technical experts. America's official time has fallen 4.8 microseconds behind the world's standard time (America atomic clock failure). While this may seem like an infinitesimally small amount of time, it could prove to be a major 'time bomb' in the digital age. The entire disruption began at the National Institute of Standards and Technology (NIST) in Boulder, Colorado. A severe storm in Colorado (NIST Boulder Colorado) caused a power outage. Grids were shut down as a precaution, but during this time, NIST's backup system (generator) also failed. This centre houses the 'atomic clock' that sets the precise time for the entire United States. As soon as the system's synchronisation was disrupted (Atomic Clock Failure), America's time became disconnected from global clocks and fell behind.

Why is this 4.8 microsecond delay dangerous?

A difference of a few microseconds on an ordinary person's wristwatch means nothing, but for modern technology, it is no less than a disaster.

GPS and Navigation: The GPS system operates entirely on time accuracy. Even a minuscule difference in time can lead to location errors of several metres.

Stock Market Play: High-frequency trading involves multi-million dollar deals executed within a thousandth of a second. A time lag can cause transaction data to fail.

Internet and Telecom: For servers and data transfer, time synchronisation is crucial, otherwise, there is a risk of network crashes.

What did experts say about this?

NIST scientists have described the incident as "rare but concerning." According to physicist Jeff Sherman, atomic clocks are highly sensitive. Even a minor power disruption can affect years of accuracy. However, the institute has assured that they are gradually bringing the time back in sync with the global standard (UTC) to prevent any major system 'crash'.

What happens next?

With power restored, experts are now trying to bridge the 'gap' that has emerged. America is resynchronising over 20 of its atomic clocks. In the coming days, an investigation will be conducted to determine if this microsecond delay has caused any hidden malfunctions in airline, defence, or banking servers. Furthermore, work has begun on developing more robust 'battery backup' systems for the future.

Could Russia and China take advantage?

From a geopolitical perspective, this time difference could create security vulnerabilities. Modern missile systems and radars are also based on atomic time. If a country's time is out of sync, its defence systems could be weakened. Technical experts believe this incident has proven that even a small 'power cut' can shake the digital infrastructure of a superpower.

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