Last night in June extended for 1 second – second coordination, for what it is? – Commander

This day will be longer for Omsk, as indeed for all earthlings, a full second. Extra second this year will be the 26th since that time. Scientists have calculated that in fact the Earth revolves around its own axis of 86400.002 seconds.

The decision also “extend” June was accepted in the second month of winter.

The land is hampered by gravitational interactions with the moon and the sun. According to scientists, the mean solar day is approximately 86,400 seconds in 1820. However, if it is a small mismatch will occur every day of the year “nabezhit” virtually an entire second. Because of the Earth’s rotation to calculate exactly when the need arises in the leap second – is unrealistic. When will be added next, really became known as the factors influencing the speed of rotation of the Earth is not enough to predict. Member of the governing board of the international organization, a geophysicist Chopo Ma informed: “In the short term, the leap second is not as predictable as everyone would like».

According to the Coordinated Universal Time, on which the whole of humanity lives, the length of Earth days is 86 400 seconds. However, as scientists claim, so the duration of the day was last awarded in 1820. Now, due to slowing the Earth’s rotation, the length of the day is 84 400 002 seconds. And these thousandths of a second as a result and cause the formation of extra time, and that requires correction. For the first time such a procedure was carried out in 1972, and is now mandatory after a certain number of years.

There are two ways to measure time by astronomical and atomic clock. Scientists came to the conclusion that the second should fix the discrepancy between solar and atomic scale. Last second added 30 June 2012, which led to the failures in programs and computer systems. Therefore, on July 1 after 02.59: 59 Moscow time will not come 03.00: 00 and 02.59: 60 and then 03.00: 00 correspondents explain. However, the repeated second, write a blog post Google, can cause problems.
Leap seconds for the first time we decided to add in 1972, and since then, until 1999, added approximately one year. Astronomers then switched to a different method of calculation, and the practice has become no less rare.
– In the short term leap second is unpredictable. From time to time, and the sudden, unexpected geological events (such as earthquakes and volcanic eruptions) can affect the Earth’s rotation in the short term.

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