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Date: Fri, 6 Jan 2012 08:33:17 -0800 (PST)
From: Scott Anderson <jsaviator@yahoo.com>
To: RSGB GROUP <rsgb_lf_group@blacksheep.org>
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Subject: LF: Fwd: USNO Series 14 (leap second)
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----- Forwarded Message -----=0AFrom: Tom Becker <gtbecker@rightime.com>=0A=
To: VLF_Group@yahoogroups.com =0ASent: Friday, January 6, 2012 9:43 AM=0ASu=
bject: [VLF_Group] Fwd: USNO Series 14=0A=0A=0A=A0 -------- Original Messag=
e --------=0A>Subject: USNO Series 14=0A>Date: Fri, 6 Jan 2012 10:35:48 -05=
00=0A>From: Earth Orientation Dept. USNO <ser7@maia.usno.navy.mil>=0A>To: u=
ndisclosed-recipients: ;=0A>=0A>U.S. NAVAL OBSERVATORY=0A>WASHINGTON, D.C. =
20392-5420=0A>=0A>January 06, 2012=0A>No. 71=0A>=0A>TIME SERVICE ANNOUNCEME=
NT SERIES 14=0A>=0A>UTC TIME STEP=0A>=0A>1. The International Earth Rotatio=
n and Reference Systems Service (IERS) has=0A>announced the introduction of=
 a time step to occur at the end of June, 2012.=0A>=0A>2. Coordinated Unive=
rsal Time (UTC) will be retarded by 1.0s so that the=0A>sequence of dates o=
f the UTC markers will be:=0A>=0A>2012 June 30 23h 59m 59s=0A>2012 June 30 =
23h 59m 60s=0A>2012 July 01 0h 0m 0s=0A>=0A>3. The difference between UTC a=
nd International Atomic Time (TAI) is:=0A>=0A>from 2009 01 Jan, UTC to 2012=
 01 Jul, UTC: TAI-UTC=3D +34s=0A>from 2012 01 Jul, UTC until further notice=
: TAI-UTC=3D +35s=0A>=0A>4. Information regarding current and predicted val=
ues of UT1-UTC is provided=0A>in IERS Bulletin A.=0A>=0A>5. UTC and all tim=
e scales based on UTC will be affected by this adjustment.=0A>However, GPS =
will not be adjusted physically. For GPS, the leap second=0A>correction con=
tained within the UTC data of subframe 4, page 18 of the=0A>navigation mess=
age transmitted by satellites will change.=0A>=0A>Before the leap second=0A=
>GPS-UTC =3D +15s (i.e., GPS is ahead of UTC by fifteen seconds)=0A>=0A>Aft=
er the leap second=0A>GPS-UTC =3D +16s (i.e., GPS will be ahead by sixteen =
seconds)=0A>=0A>[Non-text portions of this message have been removed]
--318864283-578300592-1325867597=:44226
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ve=
rdana, helvetica, sans-serif;font-size:10pt"><div style=3D"RIGHT: auto"><SP=
AN style=3D"RIGHT: auto"></SPAN></div>
<DIV></DIV>
<DIV style=3D"RIGHT: auto"><FONT face=3DArial size=3D2>----- Forwarded Mess=
age -----<BR><B><SPAN style=3D"FONT-WEIGHT: bold">From:</SPAN></B> Tom Beck=
er &lt;gtbecker@rightime.com&gt;<BR><B><SPAN style=3D"FONT-WEIGHT: bold">To=
:</SPAN></B> VLF_Group@yahoogroups.com <BR><B><SPAN style=3D"FONT-WEIGHT: b=
old">Sent:</SPAN></B> Friday, January 6, 2012 9:43 AM<BR><B><SPAN style=3D"=
FONT-WEIGHT: bold">Subject:</SPAN></B> [VLF_Group] Fwd: USNO Series 14<BR><=
/FONT><BR></DIV>
<BLOCKQUOTE style=3D"MARGIN-TOP: 5px; PADDING-LEFT: 5px; RIGHT: auto; MARGI=
N-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid">
<DIV style=3D"FONT-SIZE: 10pt; FONT-FAMILY: verdana, helvetica, sans-serif"=
>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, time=
s, serif">
<DIV id=3Dyiv1717038367 style=3D"RIGHT: auto">
<DIV style=3D"RIGHT: auto"><SPAN style=3D"DISPLAY: none; RIGHT: auto">&nbsp=
;</SPAN> -------- Original Message --------<BR>Subject: USNO Series 14<BR>D=
ate: Fri, 6 Jan 2012 10:35:48 -0500<BR>From: Earth Orientation Dept. USNO &=
lt;<A href=3D"mailto:ser7%40maia.usno.navy.mil" target=3D_blank rel=3Dnofol=
low ymailto=3D"mailto:ser7%40maia.usno.navy.mil">ser7@maia.usno.navy.mil</A=
>&gt;<BR>To: undisclosed-recipients: ;<BR><BR>U.S. NAVAL OBSERVATORY<BR>WAS=
HINGTON, D.C. 20392-5420<BR><BR>January 06, 2012<BR>No. 71<BR><BR>TIME SERV=
ICE ANNOUNCEMENT SERIES 14<BR><BR>UTC TIME STEP<BR><BR>1. The International=
 Earth Rotation and Reference Systems Service (IERS) has<BR>announced the i=
ntroduction of a time step to occur at the end of June, 2012.<BR><BR>2. Coo=
rdinated Universal Time (UTC) will be retarded by 1.0s so that the<BR>seque=
nce of dates of the UTC markers will be:<BR><BR>2012 June 30 23h 59m 59s<BR=
>2012 June 30 23h 59m 60s<BR>2012 July 01 0h 0m 0s<BR><BR>3. The difference
 between UTC and International Atomic Time (TAI) is:<BR><BR>from 2009 01 Ja=
n, UTC to 2012 01 Jul, UTC: TAI-UTC=3D +34s<BR>from 2012 01 Jul, UTC until =
further notice: TAI-UTC=3D +35s<BR><BR>4. Information regarding current and=
 predicted values of UT1-UTC is provided<BR>in IERS Bulletin A.<BR><BR>5. U=
TC and all time scales based on UTC will be affected by this adjustment.<BR=
>However, GPS will not be adjusted physically. For GPS, the leap second<BR>=
correction contained within the UTC data of subframe 4, page 18 of the<BR>n=
avigation message transmitted by satellites will change.<BR><BR>Before the =
leap second<BR>GPS-UTC =3D +15s (i.e., GPS is ahead of UTC by fifteen secon=
ds)<BR><BR>After the leap second<BR>GPS-UTC =3D +16s (i.e., GPS will be ahe=
ad by sixteen seconds)<BR><BR>[Non-text portions of this message have been =
removed]<VAR id=3Dyui-ie-cursor></VAR></DIV></DIV></DIV></DIV></BLOCKQUOTE>=
</div></body></html>
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