[time-nuts] Fw: Bulletin C number 43, leap second June 30

jmfranke jmfranke at cox.net
Thu Jan 5 15:38:03 UTC 2012


There will be a leap second the end of June 2012.

John WA4WDL

--------------------------------------------------
From: "IERS EOP Product Center" <services.iers at obspm.fr>
Sent: Thursday, January 05, 2012 9:16 AM
To: <bulc.iers at obspm.fr>
Subject: Bulletin C number 43

>
>
>
>     INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
>
> SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE 
> REFERENCE
>
> SERVICE DE LA ROTATION TERRESTRE
> OBSERVATOIRE DE PARIS
> 61, Av. de l'Observatoire 75014 PARIS (France)
> Tel.      : 33 (0) 1 40 51 22 26
> FAX       : 33 (0) 1 40 51 22 91
> e-mail    : services.iers at obspm.fr
> http://hpiers.obspm.fr/eop-pc
>
>                                              Paris, 5 January 2012
>
>                                              Bulletin C 43
>
>                                              To authorities responsible
>       for the measurement and
>       distribution of time
>
>
>                                   UTC TIME STEP
>                            on the 1st of July 2012
>
>
> A positive leap second will be introduced at the end of June 2012.
> The sequence of dates of the UTC second markers will be:
>
>                          2012 June 30,     23h 59m 59s
>                          2012 June 30,     23h 59m 60s
>                          2012 July  1,      0h  0m  0s
>
> The difference between UTC and the International Atomic Time TAI is:
>
>  from 2009 January 1, 0h UTC, to 2012 July 1  0h UTC  : UTC-TAI = - 34s
>  from 2012 July 1,    0h UTC, until further notice    : UTC-TAI = - 35s
>
> Leap seconds can be introduced in UTC at the end of the months of December
> or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
> six months, either to announce a time step in UTC or to confirm that there
> will be no time step at the next possible date.
>
>
>
>                                              Daniel GAMBIS
>                                              Head
>                                              Earth Orientation Center of 
> IERS
>       Observatoire de Paris, France
>
> __________________________________________
> 





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