Earth's rotation accelerates in 2020, we may need a 'negative leap second'

This decision to make one minute officially just 59 seconds long would return the rotation of the Earth and the precise passing of into equilibrium. While this so-called'negative leap second technique has never before been done the addition of a secon

This decision to make one minute officially just 59 seconds long would return the rotation of the Earth and the precise passing of into equilibrium. While this so-called'negative leap second technique has never before been done the addition of a secon

According to new research, Earth was rotating faster in 2020. While a year ago felt never-ending for so many since the world went into lockdown last March due to the coronavirus pandemic, 2020 actually had the shortest days on record, according to TimeandDate.com.

It takes Earth 24 hours, or 86,400 seconds, to make a complete rotation around its axis, which scientists refer to as a mean solar day.

The speed of the planet's rotations depends on the frequently complex motion of the innermost molten core along with its oceans, atmosphere, natural satellites, and other celestial bodies.

Such changes are accompanied by several atomic clocks around the world, responsible for measuring Coordinated Universal Time (UTC), a system followed by countries. The second it takes you to read this word is actually less than the conventionally acknowledged meaning of "a second".Now the question arises, if the Earth is moving faster, do we need to change how we count time?

And leap seconds are added on either the last day of June or December.

"Once the difference between astronomical time and UTC becomes very large, a leap second is added", says Dereks, who then programs such a second into atomic clocks with his colleagues.

On Sunday, the solar day lasted just 23 hours, 59 minutes and 59.9998927 seconds, then slowed down on Monday to a little more than 24 hours.

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When astronomical time, set by the time elapsed for Earth to complete one full rotation, deviates from UTC by more than 0.4 seconds, UTC is adjusted.

To determine the length of each day on Earth, scientists at the International Earth Rotation and Reference Systems Service (IERS) measure the precise moment a fixed star passes a location in the sky.

It is predicted that an average day in 2021 will be 0.05 ms shorter than the usual 86,400 seconds. Over the course of a year, the shorter days are expected to total to a deficit of about 19 milliseconds.

Earth should have passed 2020 because the planet rotates faster a year ago than it has been in decades, according to scientists, such as USA Today Reports. By doing that, the atomic time and the astronomical time get back in time. According to the IERS, leap seconds have been added to 27 days since the 1970s.

Daily Mail reported that since 2020, every day is taking less than 24 hours. That's why scientists are debating the use of a negative leap second. In 2020, that record was broken 28 times, Timeanddate.com reports.

'There are also global discussions taking place about the future of leap seconds, and it's also possible that the need for a negative leap second might push the decision towards ending leap seconds for good'. Some days can be off to an unusual degree, however, such as July 5, 2005, when Earth's rotation was 1.0516 ms less than the mean solar day. Published in Science Advances the paper stated that the glaciers melting because of climate change could be causing Earth to spin faster on its axis.

However, as Earth has been consistently slowing and not accelerating its spin, there has never before been a need to add a negative leap second.

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