Leap seconds have helped keep clocks synchronized with Earth’s rotation, but their time is now over – here’s why

If you think about leap years, it may seem like humans have a very odd way of measuring time. Sometimes, timekeepers have even added extra seconds to clocks.

國際計量大會決定從2027年5月20日起停止插入閏秒，讓協調世界時成為連續的時間尺度。文章回顧了秒的定義演變，並解釋了閏秒為何給計算機系統帶來麻煩、以及這一改變對普通人和專業用戶意味著什麼。