Can you tell us how long our planet earth day is?
Of course your answer would be 24 hours, the time it takes for the Earth to complete one orbit.
But our planet recently set a new record for the shortest day .
.You may not be aware, but in recent years the Earth’s rotation has become faster than usual.
The fastest 28 days of Earth’s rotation (since 1960) were recorded in 2020, as the Earth moved faster than average in its orbit.
Well, this is not a cause for concern, our Earth’s rotation speed is always changing somewhat, due to various reasons such as atmospheric pressure, wind, ocean currents and core movement.
On July 19, 2020, Earth completed its orbit 1.47 milliseconds ago, which scientists called the shortest day since 1960.
But this record was broken on June 29, 2022.
Similarly, on July 26, 2022, the Earth completed its orbit 1.50 milliseconds earlier, making it the second shortest day.
A leap second is often added to observe the Earth’s rotation, and since 1972 this has happened 27 times, and the last time this happened was in December 2016.
Which usually results in a slight delay in the Earth’s rotation, but now a negative leap second is being considered.
That is, scientists are considering that instead of increasing one leap second, one leap second should be decreased in order to keep the mechanism of atomic clocks correct.
What is the significance of the speed of rotation of the earth?
The rapid rotation of the Earth affects the atomic clocks that the GPS satellites use, and if the speed of the Earth’s rotation continues, the GPS satellites may become useless more quickly.
Similarly, the effects on time caused by the Earth’s rotation can also affect smartphones, computers, and communication systems that are connected to network time protocol servers.
For this reason, negative lapsed is being considered by scientists.