2023 sees Earth's first lengthening average day in 7 years, potentially indicating a continued slowing rotation.

Scientists report that Earth's rotation may be slowing, resulting in longer days. In June 2022, the Earth experienced its fastest spin, causing the shortest-ever recorded days. Since then, the trend has reversed, with the average day lengthening for the first time in seven years in 2023. Predictions indicate the slowdown may continue into 2025, potentially reaching a +1.63 millisecond increase in March 2025, making it the longest day since March 2019. Predicting changes in Earth's rotational speed is challenging due to complex factors.

April 28, 2024
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