PROBLEMATIC SECOND

Summary from the TLDR newsletter

The leap second was invented to compensate for the difference between the value measured by atomic clocks and the actual time the Earth revolves around the Sun. These seconds are usually added on the last day of June or December. Poor time synchronization can lead to data loss and other problems. Leap seconds are added rarely, so they inevitably cause problems almost every time they are added. This article looks at leap seconds and the various problems they have caused.