‘Shortest day of 2026’: How this 'milli-seconds shift' is threatening GPS and satellites

Earth's rotation is changing, with July 26, 2026, marking the shortest day by a tiny margin. This subtle shift is linked to climate change and its impact on mass distribution. Scientists observe Earth's day lengthening at a rate unseen for millions of years. Modern navigation and timekeeping systems rely on precise rotation data. Future adjustments will become more complex as these changes continue.