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.

国际计量大会决定从2027年5月20日起停止插入闰秒，让协调世界时成为连续的时间尺度。文章回顾了秒的定义演变，并解释了闰秒为何给计算机系统带来麻烦、以及这一改变对普通人和专业用户意味着什么。