Hey, Slow Down A Minute….Or A Second, Actually
The U.S. Naval Observatory, the official time keepers for the world, are adding one second to 2008. That’s right, the New Year will begin one second later due to the Earth’s slowing rotation. But don’t fear, the Earth won’t be coming to a screeching halt anytime soon.
The U.S. Naval Observatory announced that it would add one more second on Wednesday December 31 2008 at 23 hours, 59 minutes, and 59 seconds in order to remain coordianated with the Earth’s rotation and the worlds atomic clocks. These clocks are extremely accurate and based around the world to maintain a Coordinated Universal Time, also known as UTC. Atomic clocks are accurate to within a billionth of a second.
The U.S.N.O. works with the International Earth Rotation and Reference System Service to determine when extra time needs to be added to UTC. They strive to keep the clocks synced to the Earth’s rotation by no more that 0.9 seconds. This assures that UTC is in sync with the position of the sun above the Earth. It also benefits other systems including the Global Position System (GPS) and the Internet based Network Time Protocol (NTP) which are dependent on exact timing.
Since 1972 the so called leap second has been added at various times ranging from six months to seven years.
Now, about the Earth slowing down……..
As you may or may not know, the Earth rotates on its 23 degree axis at approximately 1000 mph. However, that speed can be slowed due to several reasons including the breaking action of tides, solar winds, space dust and magnetic storms, as well as excessive snow or the lack of snow a the polar caps. All of these factors do contribute to gradually slowing the Earth’s rotation. But never fear, I mentioned above we aren’t going to stop spinning for a long, long, long time
Happy New Year.











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