The shortest day in history will be in July or August, scientists warned: A big information has come out about the Earth. Scientists estimate that this can happen on July 9, July 22 or August 5, when the day will be shorter than 24 hours. Although this difference will be only of milliseconds, which a common man cannot experience, but this difference can have a big impact on satellite navigation, GPS system and time determination technology.
Change in Earth’s speed?
Scientists say that the Earth has started rotating faster than normal on its axis. Normally, it takes 86,400 seconds or 24 hours for the Earth to complete one revolution, but since the year 2020, an unexpected increase in its speed has been recorded. Due to the change in the speed of the Earth, the duration of the day has been reduced to less than 24 hours many times.
For example, in 2021, a day was 1.47 milliseconds less than normal. In 2022, it decreased to 1.59 milliseconds. Similarly, a record was made on July 5, 2024 when the day was 1.66 milliseconds shorter. But now scientists believe that this record can be broken again in 2025.
These dates may change
According to astrophysicist Graham Jones of the University of London, the speed of the Earth may increase further on these possible days of July and August. The day may be 1.30 milliseconds on July 9, 1.38 milliseconds on July 22, 1.51 milliseconds on August 5 or even less.
He also said that if the speed of the Earth continues to increase like this, then the leap second may have to be removed for the first time in 2029. This will be a major astronomical change because till now leap seconds have been added to balance the time, not removed.
What is the reason for the change?
According to scientists, this change in the speed of rotation of the Earth can happen due to many reasons. These include causes like earthquakes, ocean currents, melting of glaciers, changes in the Earth’s core, climate change patterns like El Nino.