The Internet may be

With only 1 second of redundancy, the entire global Internet system as well as online services can be in trouble.

The Internet may have trouble on June 30

On 23:59:59 GMT on June 30, the world clock will be added one second, bringing the total number of seconds in 2015 to 31,536,001. The scientific community said that adding this second is to compensate for the time the earth has slowed down.

Specifically, Mr. Daniel MacMillan, a staff working for NASA, shared that during the dinosaurs , Earth only took 23 hours to complete a rotation. However, as the Earth gradually slowed down, by 1820, the time to complete a rotation was 24 hours. It is known that 2015 will be the 26th time a second added to the world clock since 1972.

This is not the first time a similar incident has occurred, but remember that in 2000, the Y2K incident was similar to the head of technology when only with a display error between the time of transfer between 1900 and 2000 could destroy the whole computer system.

However, the difference between Y2K and this event has many differences. If the computer only confuses the number of years in the Y2K incident, during the 1-second redundancy event, the entire Internet system will be deviated by 1 second.

With regards to this added second, computer and Internet experts are proving to be quite concerned about changing the timers on the computer synchronously. In some systems, when a second is added, the computer is programmed to display the 60th second instead of jumping to another minute while some systems will display the 59th second twice to compensate. The result of this asynchrony can cause the system to fail and the processing center overloaded .

The same incident was reported in 2012 when systems with trouble recording a change in time caused a sudden increase in access on some servers. At that time, both large companies and systems, such as Yelp, Reddit or LinkedIn, reported on problems that could occur to users during this time.

However, this year, the major Internet companies in the world have had pre-preparations for the "one-second-plus" event. Google shared that instead of adding one second on June 30, they would divide this second into small fractions and do the additions earlier.

Why does Earth turn slowly?

According to the atomic clock, 86,400 seconds a day and Earth each day will be 0.002 seconds slower than the atomic clock. This number comes from the difference between the atomic time and the calculated time on Earth.

However, the fact that the Earth completed a spin is also slowing down. Scientists claim about 4 billion years ago, the Earth only needs 22 hours to complete a rotation. The reason for this is thought to be from the Moon's gravitational influence on Earth.