Earth Is Spinning Faster — A Second Will Be Deleted From Time by 2029 Scientists have confirmed that Earth’s rotation speed has increased, causing days to become slightly shorter. If this trend continues, global timekeepers may need to introduce a negative leap second by 2029—the first time a second is removed rather than added. Though the change is tiny, it has major implications for satellite navigation, financial systems, and digital infrastructure that rely on ultra-precise timekeeping. Impo