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KA9LCF > NEWS 25.01.12 01:34l 46 Lines 1471 Bytes #999 (0) @ ALLIN
BID : 33675_KA9LCF
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Subj: ARN: Science & Technology
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KA9LCF
Sent: 120124/1930Z @:KA9LCF.#NEIN.IN.USA.NOAM #:33675 [164756] FBB7.01.35 alpha
From: KA9LCF@KA9LCF.#NEIN.IN.USA.NOAM
To : NEWS@ALLIN
SCIENCE AND TECHNOLOGY: 2012 TO BE A LEAP SECOND YEAR
Look for 2012 to be a tiny bit longer than years past. This
is because 2012 will be a bit longer than 2011 or 2010.
Confused? Bruce Tennant, K6PZW, is here to sort it all out:
--
The International Earth Rotation and Reference Systems
Service has decided to add a leap second to Coordinated
Universal Time at the end of June 2012.
The most recent leap was added on December 31, 2008. They
have been necessary because of the Earth's unpredictable
rotation.
Coordinated Universal Time, better known as UTC is based on
highly accurate atomic clocks, but has been kept more or
less synchronized with mean solar time by way of leap
seconds.
Leap seconds were first introduced in 1972 but may not be
with us much longer. Now however, a proposed revision of
Standard-Frequency and Time Signal Emissions will be voted
by the International Telecommunication Union
Radiocommunication Assembly meeting, immediately before this
years World Radiocommunication Conference. If the
international panel agrees, Leap Seconds will be eliminated
by 2018.
For the Amateur Radio Newsline, I'm Bruce Tennant, K6PZW,
leaping along in Los Angeles.
--
Meantime with this being a so called leap year, February
will have a total of 29 days instead of the usual 28, to
make up for our rotation around the Sun. So adjust your
computer logging software accordingly.
(VK3PC)
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