Earth's rotation is changing its speed! Days to become shorter by...., these days in July, August to be most affected; they are...
While these losses may seem small , there are significant ramifications for global timekeeping systems. Generally , leap seconds are added to atomic clocks to take account of the Earth ' s gradually slowing rotation. However , continuing on the path of faster rotational period of the Earth and accelerating , experts project that by 2029, we may need to remove a leap second for the first time ever . This information may be a monumental factor in aligning human-made timekeeping systems with the function of the planet . This shows that time can be influenced by the subtle dynamism of Earth .
The Earth spins on its axis about every 86,400 seconds to make what we call a day. That length of time is by no means perfectly constant. The Earth ' s spin is affected by many natural factors — gravitational forces from the Moon and Sun or changes in the geophysics within the Earth itself — which create small variations in time .
Historically, and now , the Earth is gradually slowing down its rotation . During the time of the dinosaurs, the Earth spun so fast that one day lasted only about 23 hours. By the time of the bronze age , a day had become just slightly longer — still about half a second shorter than today ! Theoretically , scientists believe the Earth will eventually reach 25-hour days — but it is expected to take another 200 million years.
Since 2020, Earth has been spinning at a faster speed, a phenomenon that has amazed scientists. The International Earth Rotation and Reference Systems Service (IERS) in Washington, D.C., has noted that this acceleration has been steady, resulting in slightly shorter days by just a few milliseconds. If this occurs , experts have said that we would need to remove a leap second from Coordinated Universal Time (UTC) sometime by 2029 , something that we ' ll do for the first time in history .
A leap second is a one-second modification that is sometimes used with atomic clocks , whenever there is a change in Earth ' s irregular rotation. Until recently , leap seconds have only been added, since the motion of Earth has decreased , meaning that they have always been long enough to put in a leap second . With Earth now rotating at an increased speed , scientists are also going to have to remove a second from atomic time to accommodate the speed in which Earth ' s rotational speed is happening . This marks the first time in history that removing a second would be a requirement , and it shows how timekeeping has to conform to the imperceptible , dynamic adjustments of the spinning body of the planet's rotation .
As reported by timeanddate.com, this trend of shorter days will likely continue until at least 2025. Scientists have also calculated three specific dates when Earth's rotation will be the rapid : July 9, 2025 July 22, 2025 August 5, 2025 Also , so USA Today reported , on August 5th , a day may be as much as 1.51 milliseconds shorter than 24 hours. Humans might not be able to perceive this change , but in scientific terms , this matters greatly , and timekeeping systems need to be accurate .
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