For several years now, the land- It has been spinning unusually fast, which is why 2020 encompassed the shortest 28 days since 1960 and 2021 is expected to be the shortest year in decades.
The land- On average, it runs every 86,400 seconds, which is equal to 24 hours.
However, these twists are not perfectly perfect. Before the year 2020 started, the shortest day since 1973 was July 5, 2005, when the rotation lasted 1.0516 milliseconds less than 86,400 seconds.
Why does the Earth spin faster?
This rotational speed of the planet varies due to the complex motion of the molten core, oceans and atmosphere-
Scientists who speed up Land they insure that the trend of shorter days will continue into 2021.
According to his calculations, an average day in 2021 will be 0.05 milliseconds less than 86,400 seconds.
There will be a delay of about 19 milliseconds over the year.
To determine the length of a day, scientists of the IRISH They measure the exact speed of the Earth’s rotation by looking at the precise times that a fixed star passes a certain location in the sky every day.