Time on Earth Is Changing: How the Planet’s Spin Is Gradually Slowing (Image: Canva)
Science
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Moneycontrol30-12-2025, 12:19

Earth's Rotation Slowing: Days Lengthening, But Don't Expect 25-Hour Days Soon

  • Earth's rotation is gradually slowing, causing days to lengthen imperceptibly over vast periods.
  • The change is tiny: about 1.7 milliseconds per century, primarily due to the Moon's tidal friction.
  • Other factors like atmospheric shifts, melting glaciers, and Earth's interior also subtly influence rotation.
  • A 25-hour day is estimated to be 200 million years away, allowing ample time for biological adaptation.
  • Scientists debunk viral claims of immediate disruption, emphasizing the extremely slow, deep-time nature of this phenomenon.

Why It Matters: Earth's days are slowly lengthening due to lunar tides, but the change is imperceptible and millions of years away.

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