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What is negative leap second?

A study by the Scripps Institution of Oceanography indicates that due to the slowing down of the Earth, leap seconds will need to be reduced rather than increased. This is a matter of concern for scientists, the so-called negative second leap. But this does not mean that due to the slowing down of the Earth’s speed, it will suddenly be 25 hours instead of 24 hours. It may not happen, but it will definitely affect the timing. In fact, Coordinated Universal Time (UTC) is used all over the world to keep time, also known as astronomical time, because it is based on the rotation of the Earth and interstellar calculations, it has long been used as a clock. and used as a clock. A global standard for timekeeping. In 1967, atomic clocks began to be used, which advance every second using the frequency of light emitted by atoms, and provide an accurate timekeeper. Today, a set of about 450 atomic clocks keep the official time on Earth, known as UTC. In 1972, leap seconds began to be used to keep the atomic clocks running in accordance with the movement of the Earth.

Need to remove a leap second from UTC

Scientists say the Earth’s rotation rate is affected by currents in its liquid core, which have caused the outer layer to spin faster since the 1970s. This means that negative leap seconds are needed less often, and if this continues, one leap second will need to be removed from UTC. Scientists are concerned about how to reduce one second? Leap seconds are added because if the Earth had been spinning slowly for millions of years, then the length of a minute in UTC should be 61 seconds, given the Earth’s motion.

How to reduce time?

According to the US Navy, the leap second was last added on December 31, 2016. According to Earth’s motion, a leap second was added every year from 1972 to 1999. But in the past 23 years, the leap second has only been added four times. Scientists say our computers are hardwired to understand how to add leap seconds. But they are not ready to deal with the problem of how to adjust the time from 12:00:03 to 12:00:02, which is a bit like the Y2K bug.

Now some scientists are in favor of finishing second in the jump. At the end of 2022, a panel of scientists and government representatives around the world voted to end leap seconds by 2035. Experts say that leap seconds have created complexity for computing and they fear that most computer code is unable to understand negative leap seconds.