For decades, an international team of scientists has been making subtle adjustments to global timekeeping by occasionally adding brief pauses to atomic clocks. These small, deliberate modifications—known as leap seconds—help synchronize official time with Earth’s gradually slowing rotation, preventing a growing mismatch between human-made and natural timekeeping. The practice, though rarely noticed by the public, ensures that systems relying on precise timing, from financial markets to navigation, remain accurate. Now, debates are emerging over whether to continue the tradition or adopt alternative solutions to keep clocks aligned with the planet’s rotation.
For more than 50 years, a group of timekeepers has been quietly sneaking extra seconds onto the world's clocks.
