Time is something that is perceived as being constant. There is always 24 hours a day, give or take a few fractions of a second. Although time is considered constant, the length of days varies slightly. This is why we have a leap year every four years. Scientists recently announced something very interesting. Days are starting to shorten on average because the Earth rotates faster.
The fastest Revolves around the planet May require adjustments to keep calendars on track. Scientists indicate that the faster rotation does not put the planet in danger of any kind. The cause of increased circulation is well understood, and things that affect it include lunar gravity, snowfall levels, and mountain erosion. Over the past several decades, the accuracy of atomic clocks has allowed scientists to make more precise adjustments to time measurement.
Leap seconds have been added in the past to maintain proper timing outside of a leap year. Interestingly, since scientists began measuring time with high accuracy, the length of days tended to be slightly longer by a fraction of a millisecond. This trend has now reversed.
Researchers refer to July 19 as a noticeably shorter day, at 1.4602ms below the standard. Before July 19, the previous record for the shortest day was set in 2005, but in 2020 that record was surpassed 28 times.
As the Earth’s rotation speeds up, the researchers say we may need to add a negative leap second in the next few years to keep the clocks in sync. This will be the first negative leap second added. Some scientists believe that the Earth’s increased rotation could be a result of global warming.