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# <pre> |
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# This file is in the public domain, so clarified as of |
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# 2009-05-17 by Arthur David Olson. |
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# Allowance for leap seconds added to each time zone file. |
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# Allowance for leapseconds added to each timezone file. |
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# This file is in the public domain. |
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# This file is generated automatically from the data in the public-domain |
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# leap-seconds.list file available from most NIST time servers. |
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# If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work, |
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# you should be able to pick up leap-seconds.list from a secondary NIST server. |
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# For more about leap-seconds.list, please see |
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# The NTP Timescale and Leap Seconds |
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# http://www.eecis.udel.edu/~mills/leap.html |
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# The International Earth Rotation Service periodically uses leap seconds |
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# to keep UTC to within 0.9 s of UT1 |
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# (which measures the true angular orientation of the earth in space); see |
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# Terry J Quinn, The BIPM and the accurate measure of time, |
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# Proc IEEE 79, 7 (July 1991), 894-905. |
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# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>. |
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# There were no leap seconds before 1972, because the official mechanism |
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# accounting for the discrepancy between atomic time and the earth's rotation |
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# did not exist until the early 1970s. |
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# or |
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# Leap YEAR MON DAY 23:59:59 - R/S |
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# If the leapsecond is Rolling (R) the given time is local time |
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# If the leapsecond is Stationary (S) the given time is UTC |
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# If the leapsecond is Rolling (R) the given time is local time. |
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# If the leapsecond is Stationary (S) the given time is UTC. |
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# Leap YEAR MONTH DAY HH:MM:SS CORR R/S |
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Leap 1972 Jun 30 23:59:60 + S |
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Leap 2005 Dec 31 23:59:60 + S |
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Leap 2008 Dec 31 23:59:60 + S |
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Leap 2012 Jun 30 23:59:60 + S |
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# INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) |
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# |
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# SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE |
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# |
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# |
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# SERVICE DE LA ROTATION TERRESTRE |
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# OBSERVATOIRE DE PARIS |
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# 61, Av. de l'Observatoire 75014 PARIS (France) |
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# Tel. : 33 (0) 1 40 51 22 26 |
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# FAX : 33 (0) 1 40 51 22 91 |
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# e-mail : (E-Mail Removed) |
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# http://hpiers.obspm.fr/eop-pc |
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# |
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# Paris, 5 January 2012 |
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# |
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# |
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# Bulletin C 43 |
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# |
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# To authorities responsible |
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# for the measurement and |
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# distribution of time |
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# |
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# |
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# UTC TIME STEP |
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# on the 1st of July 2012 |
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# |
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# |
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# A positive leap second will be introduced at the end of June 2012. |
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# The sequence of dates of the UTC second markers will be: |
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# |
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# 2012 June 30, 23h 59m 59s |
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# 2012 June 30, 23h 59m 60s |
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# 2012 July 1, 0h 0m 0s |
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# |
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# The difference between UTC and the International Atomic Time TAI is: |
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# |
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# from 2009 January 1, 0h UTC, to 2012 July 1 0h UTC : UTC-TAI = - 34s |
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# from 2012 July 1, 0h UTC, until further notice : UTC-TAI = - 35s |
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# |
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# Leap seconds can be introduced in UTC at the end of the months of December |
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# or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every |
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# six months, either to announce a time step in UTC or to confirm that there |
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# will be no time step at the next possible date. |
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# |
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# |
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# Daniel GAMBIS |
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# Head |
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# Earth Orientation Center of IERS |
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# Observatoire de Paris, France |
