Earth's days are becoming longer due to climate change, affecting timekeeping, digital infrastructure, and GPS accuracy.

Climate change is causing Earth's days to become longer as a result of melting polar ice caps and rising sea levels. The redistribution of mass from the poles to the equator due to increased temperatures and melting ice alters the Earth's rotation speed, adding milliseconds to each day. The length of a day is now slightly different each day, and this change could have consequences for global timekeeping, digital infrastructure, and GPS satellite accuracy.