Earth sets record for the shortest day


“Scientists have recorded Earth’s shortest day since its rotational period began to be recorded with highly precise atomic clocks: On June 29, 2022, Earth’s spin was completed in 1.59 milliseconds under 24 hours. A day lasts 24 hours because the Earth completes a full spin on its axis roughly every 8,640,000 milliseconds. … Previously, the planet had been observed to be spinning more slowly and taking longer to complete a day. As a result, with every passing century, Earth has been taking a few milliseconds longer to complete a spin. In recent years, however, this long-term trend has been reversing. The Earth seems to be speeding up and taking progressively less time to complete its spin meaning days are shortening.” (08/03/22)