Davis Motor Sales banner ad

clockMuch to the relief of millions of people, the United States Naval Observatory has announced that a "leap second" adjustment to everyone's clocks, watches, computers and other time keeping devices will not be necessary —  "No Leap Second" will be introduced in December 2013.

The announcement was contained in Bulletin C 46 by International Earth Rotation and
Reference Systems Service as scientists and astronomers attempt to gauge
actual earth rotation vs International Atomic Time.  The variance is of little
concern to the average person. 

It is a very big deal to the International Space Station moving at 4.75 miles per
second and GPS satellites, in which the earth's position must correlate to the satellite.  

The last leap second was in June 2012 and scientists expect another adjustment in
2015.  

The earth is slowly slowing down in reaction to tides although that doesn't mean  residents of planet Earth should be alarmed.  The total time difference since January 1961 is 35 seconds.  The adjusted time called Coordinated Universal Time.

This does not mean the day is 35 seconds shorter.  It means that if you
synchronized an atomic clock to actual time of day in January 1961 to the same earth position (time of day) today, the atomic clock would be 35 seconds fast.  Therefore UTC time is 35 seconds slower than atomic time.

The U.S. Naval Observatory is the official time keeper for the United States
Department of Defense, the United States Global Positioning Satellite system and the standard time for The United States.

Interestingly, the GPS uses neither UTC or TAI.  It uses its own unique time.  GPS
is about 16 seconds faster than UTC and is adjusted frequently to compensate for
earth rotation variations.  A 4.75 mile variation is not acceptable for military and civilian GPS applications.

Ron Sanders
SurfKY News

© Copyright 2015 SurfKY News Group, Inc. All rights reserved. This material may not be published, broadcast, or rewritten without permission. SurfKY News encourages you to share this story on social media.

Posted on 2/2/14
3/13 - 16
3/13 - 16

Most Read This Week

February 25, 2015 7382

Multi-Agency Investigation Nets Large-Scale Meth…

in Top News For All Sites by Trooper Stu Recke
February 24, 2015 7241

Two Charged in Central City Meth Bust

in Local (Muhlenberg) Top News by Trooper Stu Recke
February 22, 2015 7094

Easter Cuties Pageant in Memory of Shanice Bean

in Top News For All Sites Touching Hopkins by Tammy Holloway, SurfKY News
February 25, 2015 6105

New Asian Restaurant Coming to Madisonville

in Local (Hopkins) Top News by Gary Gates, SurfKY News
February 23, 2015 4921

Fire Departments Respond to Wester's Body Shop

in Local (Muhlenberg) Top News by Shawn Freels
February 24, 2015 4602

School Board Holding Special Called Meeting

in Muhlenberg News by Sherri Miller

Most Read This Month

February 12, 2015

UPDATE: Name of Pennyrile Fatality Officially…

in Top News For All Sites Touching Hopkins by Doreen Dennis, SurfKY News
February 09, 2015

Police Pursue Man after Fight at Taco Bell

in Local (Hopkins) Top News by Madisonville Police Department/Hopkins County Detention Center

Stories Trending Today

March 02, 2015 3219

Madisonville Teen Faces Numerous Drug Charges

in Local (Hopkins) Top News by Madisonville Police Department/Hopkins County Detention Center
March 01, 2015 1661

HCCHS Student Has Unique Eye for Art

in Local (Hopkins) Top News by Amber Averitt, SurfKY News
March 01, 2015 1408

4H Penguin Plunge Draws Hundreds to Poolside

in Local (Muhlenberg) Top News by Paul McRee, SurfKY News
March 01, 2015 1080

Dave Says - March 1, 2015

in General News For All Sites by Dave Ramsey
March 01, 2015 1056

Whitfield Meets with American Financial Services…

in General News For All Sites by Robert Hankins
March 01, 2015 1002

West Broadway Vendor Event, Tag Sale Planned

in Local (Hopkins) Top News by Tammy Holloway, SurfKY News
March 01, 2015 1000

Legislator's Log - Week of March 1, 2015

in General News For All Sites by Brent Yonts
March 01, 2015 983

Libraries’ Drawing Contest Begins March 2

in Local (Muhlenberg) Top News by Amie Waltrip
March 01, 2015 962

Kentucky Offers Tax Credit to Small Business…

in General News For All Sites by Joe Hall
March 01, 2015 929

Outdoor Truths - March 1, 2015

in General News For All Sites by Gary Miller