The claim
““NASA just confirmed that July 2026 will have 25 hours in a day because Earth is slowing down.””
There is no NASA confirmation of a 25-hour day in July 2026, and measured changes in Earth’s rotation are tiny (milliseconds), not hours.
Earth’s rotation does vary, but the observable fluctuations are on the order of milliseconds and are tracked by timekeeping authorities, not announced as sudden extra hours. Long-term tidal braking does gradually lengthen the day, but by about milliseconds per century, not anywhere near an additional hour on a specific date. In fact, recent years have included some of the shortest days measured (slightly under 24 hours by milliseconds), which runs opposite the viral claim’s premise. No credible NASA release supports the statement, and it conflicts with established geophysics and official timekeeping data used to manage UTC and leap seconds.
Sources (4)
- highNASA Space Place — What Is a Day?
- highInternational Earth Rotation and Reference Systems Service (IERS) — Earth Orientation Data / Leap Seconds
- highNOAA National Centers for Environmental Information — Earth’s Rotation and Reference Systems
- mediumTimeanddate — Earth Is Spinning Faster (explainer with references to measured LOD changes)