When the moon is positioned farther from Earth's equator and closer to the poles, its pull on the planet becomes weaker. With less resistance, Earth is able to spin a bit faster, which makes the day slightly shorter than usual.

Earth is set to break records with July 9 marking the shortest day ever recorded, shaving off 1.3–1.5 milliseconds due to lunar orbit shifts

Scientists expect a specific day in July to be the shortest day of 2025 so far, running just over a millisecond faster than the standard 24-hour cycle.