Earth is slowing down faster than in 3.6 million years: Are we getting days longer than 24 hours?

Imagine waking up to find the day has 25 hours instead of 24. Clocks would shift, work schedules would roll forward, and everything from sleep to business would have to adjust. Sounds like sci-fi, right? Well, a lot of chatter has been going around lately, claiming Earth’s rotation is slowing down and that 25-hour days are coming soon.But what’s happening, in reality?That buzz comes from a recent study saying human-driven climate change is slowing Earth’s spin faster than anything we’ve seen in 3.6 million years. The news stirred up confusion and curiosity. Are we about to break free of the 24-hour day? Is climate change really messing with the planet’s rotation? Will we notice anything soon?Yes, Earth’s rotation is slowing. But don’t pack for longer days just yet, as the change is tiny. It’s measured in milliseconds, not hours. All those wishful thoughts about having a 25-hour day? The reality is quite different — we’d have to wait hundreds of millions of years before Earth gains even one extra hour in its daily rotation.In a new study, appearing in the Journal of Geophysical Research: Solid Earth, researchers from the University of Vienna and ETH Zurich figured out that the current pace of day-lengthening is unlike anything in the past 3.6 million years. Melting glaciers and ice sheets are causing sea levels to rise, redistributing Earth’s mass, and slowing the planet’s spin.The science isn’t complicated. As polar ice melts, water flows to the oceans and shifts toward the equator. This shuffling of mass slows Earth, kind of like a spinning figure skater stretching their arms and spinning more slowly. The latest study says day length is currently increasing by about 1.33 milliseconds per century due to climate-related sea-level rise. If emissions stay high, we might reach up to 2.62 milliseconds per century by 2080. In fact, in the study, Mostafa Kiani Shahvandi (University of Vienna) and Benedikt Soja (ETH Zurich) outline that this rapid rise in day length is unparalleled over the last 3.6 million years.Yes, it is — but you’ll never notice it.Why so?Earth’s rotation isn’t constant anyway; it speeds up and slows down for lots of reasons, from shifts in the molten core to atmospheric changes, ocean currents, earthquakes, and even the Moon's tug.We’ve even had some record-short days recently, thanks to these natural ups and downs. The long-term trend, though, is gradual slowing. The Moon's gravity is the main culprit on huge time scales; it creates tides and, through friction, gradually draws rotational energy out of the planet. That’s made days longer for billions of years.In theory, sure, it seems so. But practically, it’s a slim chance.Earth’s rotation is slowing by about 1.8 to 2 milliseconds per century due to tidal effects. At that rate, we’d need 200 million years for one day to stretch an extra hour.So, those viral claims? Far from actual calculations. The trend is real, but we’re talking timescales so huge, nobody alive now, or for thousands of generations, will even come close to a 25-hour day. With the current climate-driven pace, a day gets just 0.00133 seconds longer after a century.Because technology runs on incredibly precise timing. Satellite navigation, GPS, telecom networks, financial trading, even space missions — all depend on exact timekeeping. Slight differences in Earth’s rotation mean scientists have to tweak clocks and keep everything in sync.Keeping atomic clocks lined up with Earth’s actual spin isn’t something most folks think about, but for global systems, it matters a lot.It’s a reminder of climate change’s reach. Forget prepping for a longer workday. What’s striking here is that climate change is starting to affect something as basic as Earth’s rotation. Human action warms the atmosphere, melts glaciers, and causes sea levels to rise; shifting that mass actually tweaks how fast the planet spins.It’s another sign that everything on Earth is connected. What we do can change not just the weather, but time itself. Day length isn’t stretching by hours anytime soon, but even the planet’s rhythm is now touched by human influence.So, in all truth, the 24-hour day isn’t going anywhere. But climate change is proving to be powerful enough to alter even the spinning of our world — one millisecond at a time.