Brain‑Melting Discovery: Why July 9’s Record‑Breaking Earth Spin Could Crash Your Clock—and What Experts Are Doing About It
On July 9, 2025, Earth’s length of day was predicted to be −1.30 ms, the fastest day of 2025 and close to 2024’s all‑time −1.66 ms. A 1 millisecond timing error can yield GPS position errors of hundreds of meters and disrupt high‑frequency trading