Earth’s Rotation Changes Affect Technology and Global Networks

The planet Earth is rotating differently than it used to do and its rotation speed has been changing in ways that scientists didn’t expect, these shifts are creating  challenges for the technology we depend on every day.

Since 2020, Earth has been recording some of the shortest days in recorded history. This year, scientists predict three specific dates (July 9, July 22, and August 5)  will see Earth complete its rotation quickly, with days shortened by up to 1.51 milliseconds which is unusual.

This might not sound so much of a big deal, but in the world of world wide technology and tracking milliseconds matter. “The cause of this acceleration is not explained, Ocean and atmospheric models don’t explain this huge acceleration.” says Leonid Zotov, an expert on Earth rotation.

The Earth’s rotation isn’t as stable as most people think, it actually slows down, making days about 1.8 milliseconds longer each century on average. But it hasn’t been so in recent years.

Climate change has a key role to play  in these timing shifts. It  is affecting Earth’s rotation to the point that we might need to adapt to a time reduction as disappearing ice sheets, changing ocean currents all affect how fast our planet spins.

For years, scientists have added “leap seconds” to our clocks to keep them equal with Earth’s rotation but for  the first time in years, officials stated  earlier in 2025 that no leap second would be added this year. While the most recent leap second occurred in 2016, the idea of  a second being subtracted instead of added  is now an option and this creates a new problem. 

Adding leap seconds has always been complicated, but removing time could be even more challenging.

Global positioning systems GPS faces issues  from these timing changes. GPS Time uses time which does not include leap seconds, while the global time standard called Coordinated Universal Time (UTC) does include the leap second changes.

Adding or subtracting leap seconds requires GPS devices to switch between these two time standards. In 2012, engineers running Europe’s satellite navigation system said they couldn’t even predict the impact of the leap second and that it may take up to 72 hours of downtime to manage.

Data centres, internet servers, and communication networks depend on coordinated timing. When clocks don’t match, systems can fail in unexpected ways. Mail servers could  reject messages, Data  could be lost or corrupted, and network security systems might stop working properly.

The cloud computing services that support everything from streaming video to online commerce always need to be in sync with various time zones and systems. Ripple effects are created throughout these connected networks by differences in the Earth’s rotation.

Preparing for Change

Although the technology sector is looking for answers, The  plans are challenging due to the instability of Earth’s rotational movements. Suggestions  have been made to completely do away with leap seconds and allow atomic clocks to shift  from solar time.

Better coordination  between various timing systems is suggested by others and this Requires converting  GPS time to UTC. 

Earth’s changing rotation speed might seem like a scientific problem, but it has real effects on technology. As our world becomes more reliant on precise timing, these changes are becoming more disturbing.

The answer is not simple but policymakers, engineers, and scientists must come together to develop systems that can manage Earth’s unpredictable behaviour. To keep our digital world functioning properly in the meantime, IT corporations are funding duplicate timing sources and backup systems.