June 30 will be halted for a second time

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Coming June 30 day officially is going to stay a second longer, because on Tuesday we will stop for a second time. Usually, where there are 60 seconds in a minute, 61 seconds of the last minute of the day will be June 30. The US space agency NASA has endorsed it.
Indeed, there are 86,400 seconds in a day, but this time an extra second on June 30, the leap second will be added. NASA's Goddard Space Flight Center in Greenbelt, Maryland Daniel McMillan said, "Earth's rotation is slowing down gradually, so the extra leap second has been added." Coordinated Universal Time, or UTC, according to the case, which are used in people's daily life.

UTC Atomic Time, where a second term in Attms of cesium is based on the anticipated transition Ilektromagnetik. These are more reliable so that the cesium clock Transition 1.4 million years may be right. NASA said in a statement, "the earth, moon and sun because of the gravitational force between Earth's rotation is slowing down."

Why leap seconds have been added
Atomic and solar time reconcile UTC January 1, 1960 brought the system. If needed, make changes to the 1972 UTC leap seconds have been added. Also at the last minute in June or December, an extra second is added. International Earth Rotation and Reference Systems Used to add additional work is done by the service. So, for the synchronization of these two measurement values ​​for a second time in the last minute of June 30 will stop. As soon as this will be the last minute, 61 seconds.

What kind of leap year leap seconds
Under the rule of leap year every four years an extra day is added to the calendar. It is therefore that the earth to revolve around the sun, 5 hours, 48 ​​minutes and 46 seconds extra time. However, to the contrary, no such calculation Leap seconds can not be that after a period of time when connected. The earth rotates on its axis, the dynamics of the Earth's center, atmosphere, oceans, groundwater vary and depends on many things, including ice storage.

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