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Leap seconds
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Acronyms and locations of the timing centres
acronyms
Circular T
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no. 140 [August 1999]
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no. 136 [April 1999]
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no. 134 [ February 1999]
no. 133 [January 1999]
no. 132 [December 1998]
no. 131 [November 1998]
no. 130 [October 1998]
no. 129 [September 1998]
no. 128 [August 1998]
no. 127 [July 1998]
no. 126 [June 1998]
no. 125 [May 1998]
Fractional frequency of EAL from primary frequency standards
EAL 10.06 [June 2010]
EAL 10.05 [May 2010]
EAL 10.04 [April 2010]
EAL 10.03 [March 2010]
EAL 10.02 [ February 2010]
EAL 10.01 [January 2010]
EAL 09.12 [December 2009]
EAL 09.11 [November 2009]
EAL 09.10 [October 2009]
EAL 09.09 [September 2009]
EAL 09.08 [August 2009]
EAL 09.07 [July 2009]
EAL 09.06 [June 2009]
EAL 09.05 [May 2009]
EAL 09.04 [April 2009]
EAL 09.03 [March 2009]
EAL 09.02 [ February 2009]
EAL 09.01 [January 2009]
EAL 08.12 [December 2008]
EAL 08.11 [November 2008]
EAL 08.10 [October 2008]
EAL 08.09 [September 2008]
EAL 08.08 [August 2008]
EAL 08.07 [July 2008]
EAL 08.06 [June 2008]
EAL 08.05 [May 2008]
EAL 08.04 [April 2008]
EAL 08.03 [March 2008]
EAL 08.02 [ February 2008]
EAL 08.01 [January 2008]
EAL 07.12 [December 2007]
EAL 07.11 [November 2007]
EAL 07.10 [October 2007]
EAL 07.09 [September 2007]
EAL 07.08 [August 2007]
EAL 07.08 [August 2007]
EAL 07.07 [July 2007]
EAL 07.06 [June 2007]
EAL 07.05 [May 2007]
EAL 07.04 [April 2007]
EAL 07.03 [March 2007]
EAL 07.02 [ February 2007]
EAL 07.01 [January 2007]
EAL 06.12 [December 2006]
EAL 06.11 [November 2006]
EAL 06.10 [October 2006]
EAL 06.09 [September 2006]
EAL 06.08 [August 2006]
EAL 06.07 [July 2006]
EAL 06.06 [June 2006]
EAL 06.05 [May 2006]
EAL 06.04 [April 2006]
EAL 06.03 [March 2006]
EAL 06.02 [ February 2006]
EAL 06.01 [January 2006]
EAL 05.12 [December 2005]
EAL 05.11 [November 2005]
EAL 05.10 [October 2005]
EAL 05.09 [September 2005]
EAL 05.08 [August 2005]
EAL 05.07 [July 2005]
EAL 05.06 [June 2005]
EAL 05.05 [May 2005]
EAL 05.04 [April 2005]
EAL 05.03 [March 2005]
EAL 05.02 [ February 2005]
EAL 05.01 [January 2005]
EAL 04.12 [December 2004]
EAL 04.11 [November 2004]
EAL 04.10 [October 2004]
EAL 04.09 [September 2004]
EAL 04.08 [August 2004]
EAL 04.07 [July 2004]
EAL 04.06 [June 2004]
EAL 04.05 [May 2004]
EAL 04.04 [April 2004]
EAL 04.03 [March 2004]
EAL 04.02 [ February 2004]
EAL 04.01 [January 2004]
EAL 03.12 [December 2003]
EAL 03.11 [November 2003]
EAL 03.10 [October 2003]
EAL 03.09 [September 2003]
EAL 03.08 [August 2003]
EAL 03.07 [July 2003]
EAL 03.06 [June 2003]
EAL 03.05 [May 2003]
EAL 03.04 [April 2003]
EAL 03.03 [March 2003]
EAL 03.02 [ February 2003]
EAL 03.01 [January 2003]
EAL 02.12 [December 2002]
EAL 02.11 [November 2002]
EAL 02.10 [October 2002]
EAL 02.09 [September 2002]
EAL 02.08 [August 2002]
EAL 02.07 [July 2002]
EAL 02.06 [June 2002]
EAL 02.05 [May 2002]
EAL 02.04 [April 2002]
EAL 02.03 [March 2002]
EAL 02.02 [ February 2002]
EAL 02.01 [January 2002]
EAL 01.12 [December 2001]
EAL 01.11 [November 2001]
EAL 01.10 [October 2001]
EAL 01.09 [September 2001]
EAL 01.08 [August 2001]
EAL 01.07 [July 2001]
EAL 01.06 [June 2001]
EAL 01.05 [May 2001]
EAL 01.04 [April 2001]
EAL 01.03 [March 2001]
EAL 01.02 [ February 2001]
EAL 01.01 [January 2001]
EAL 00.12 [December 2000]
EAL 00.11 [November 2000]
EAL 00.10 [October 2000]
EAL 00.09 [September 2000]
EAL 00.08 [August 2000]
EAL 00.07 [July 2000]
EAL 00.06 [June 2000]
EAL 00.05 [May 2000]
EAL 00.04 [April 2000]
EAL 96 [1996]
Weights of clocks participating in the computation of TAI
period 10.06 [June 2010]
period 10.05 [May 2010]
period 10.04 [April 2010]
period 10.03 [March 2010]
period 10.02 [ February 2010]
period 10.01 [January 2010]
period 09.12 [December 2009]
period 09.11 [November 2009]
period 09.10 [October 2009]
period 09.09 [September 2009]
period 09.08 [August 2009]
period 09.07 [July 2009]
period 09.06 [June 2009]
period 09.05 [May 2009]
period 09.04 [April 2009]
period 09.03 [March 2009]
period 09.02 [ February 2009]
period 09.01 [January 2009]
period 08.12 [December 2008]
period 08.11 [November 2008]
period 08.10 [October 2008]
period 08.09 [September 2008]
period 08.08 [August 2008]
period 08.07 [July 2008]
period 08.06 [June 2008]
period 08.05 [May 2008]
period 08.04 [April 2008]
period 08.03 [March 2008]
period 08.02 [ February 2008]
period 08.01 [January 2008]
period 07.12 [December 2007]
period 07.11 [November 2007]
period 07.10 [October 2007]
period 07.09 [September 2007]
period 07.08 [August 2007]
period 07.07 [July 2007]
period 07.06 [June 2007]
period 07.05 [May 2007]
period 07.04 [April 2007]
period 07.03 [March 2007]
period 07.02 [ February 2007]
period 07.01 [January 2007]
period 06.12 [December 2006]
period 06.11 [November 2006]
period 06.10 [October 2006]
period 06.09 [September 2006]
period 06.08 [August 2006]
period 06.07 [July 2006]
period 06.06 [June 2006]
period 06.05 [May 2006]
period 06.04 [April 2006]
period 06.03 [March 2006]
period 06.02 [ February 2006]
period 06.01 [January 2006]
period 05.12 [December 2005]
period 05.11 [November 2005]
period 05.10 [October 2005]
period 05.09 [September 2005]
period 05.08 [August 2005]
period 05.07 [July 2005]
period 05.06 [June 2005]
period 05.05 [May 2005]
period 05.04 [April 2005]
period 05.03 [March 2005]
period 05.02 [ February 2005]
period 05.01 [January 2005]
period 04.12 [December 2004]
period 04.11 [November 2004]
period 04.10 [October 2004]
period 04.09 [September 2004]
period 04.08 [August 2004]
period 04.07 [July 2004]
period 04.06 [June 2004]
period 04.05 [May 2004]
period 04.04 [April 2004]
period 04.03 [March 2004]
period 04.02 [ February 2004]
period 04.01 [January 2004]
period 03.12 [December 2003]
period 03.11 [November 2003]
period 03.10 [October 2003]
period 03.09 [September 2003]
period 03.08 [August 2003]
period 03.07 [July 2003]
period 03.06 [June 2003]
period 03.05 [May 2003]
period 03.04 [April 2003]
period 03.03 [March 2003]
period 03.02 [January 2003]
period 03.01 [January 2003]
period 02.12 [December 2002]
period 02.11 [November 2002]
period 02.10 [October 2002]
period 02.09 [September 2002]
period 02.08 [August 2002]
period 02.07 [July 2002]
period 02.06 [June 2002]
period 02.05 [May 2002]
period 02.04 [April 2002]
period 02.03 [March 2002]
period 02.02 [ February 2002]
period 02.01 [January 2002]
period 01.12 [December 2001]
period 01.11 [November 2001]
period 01.10 [October 2001]
period 01.09 [September 2001]
period 01.08 [August 2001]
period 01.07 [July 2001]
period 01.06 [June 2001]
period 01.05 [May 2001]
period 01.04 [April 2001]
period 01.03 [March 2001]
period 01.02 [ February 2001]
period 01.01 [January 2001]
period 00.12 [December 2000]
period 00.11 [November 2000]
period 00.10 [October 2000]
period 00.09 [September 2000]
period 00.08 [August 2000]
period 00.07 [July 2000]
period 00.06 [June 2000]
period 00.05 [May 2000]
period 00.04 [April 2000]
period 00.03 [March 2000]
period 00.02 [ February 2000]
period 00.01 [January 2000]
period 99.12 [December 1999]
period 99.11 [November 1999]
period 99.10 [October 1999]
period 99.09 [September 1999]
period 99.08 [August 1999]
period 99.07 [July 1999]
period 99.06 [June 1999]
period 99.05 [May 1999]
period 99.04 [April 1999]
period 99.03 [March 1999]
period 99.02 [ February 1999]
period 99.01 [January 1999]
period 98.12 [December 1998]
period 98.11 [November 1998]
period 98.10 [October 1998]
period 98.09 [September 1998]
period 98.08 [August 1998]
period 98.07 [July 1998]
period 98.06 [June 1998]
period 98.05 [May 1998]
period 98.04 [April 1998]
period 98.03 [March 1998]
period 98.02 [ February 1998]
period 98.01 [January 1998]
Rates relative to TAI of clocks participating in the computation of TAI
period 10.06 [June 2010]
period 10.05 [May 2010]
period 10.04 [April 2010]
period 10.03 [March 2010]
period 10.02 [ February 2010]
period 10.01 [January 2010]
period 09.12 [December 2009]
period 09.11 [November 2009]
period 09.10 [October 2009]
period 09.09 [September 2009]
period 09.08 [August 2009]
period 09.07 [July 2009]
period 09.06 [June 2009]
period 09.05 [May 2009]
period 09.04 [April 2009]
period 09.03 [March 2009]
period 09.02 [ February 2009]
period 09.01 [January 2009]
period 08.12 [December 2008]
period 08.11 [November 2008]
period 08.10 [October 2008]
period 08.09 [September 2008]
period 08.08 [August 2008]
period 08.07 [July 2008]
period 08.06 [June 2008]
period 08.05 [May 2008]
period 08.04 [April 2008]
period 08.03 [March 2008]
period 08.02 [ February 2008]
period 08.01 [January 2008]
period 07.12 [December 2007]
period 07.11 [November 2007]
period 07.10 [October 2007]
period 07.09 [September 2007]
period 07.08 [August 2007]
period 07.07 [July 2007]
period 07.06 [June 2007]
period 07.05 [May 2007]
period 07.04 [April 2007]
period 07.03 [March 2007]
period 07.02 [ February 2007]
period 07.01 [January 2007]
period 06.12 [December 2006]
period 06.11 [November 2006]
period 06.10 [October 2006]
period 06.09 [September 2006]
period 06.08 [August 2006]
period 06.07 [July 2006]
period 06.06 [June 2006]
period 06.05 [May 2006]
period 06.04 [April 2006]
period 06.03 [March 2006]
period 06.02 [ February 2006]
period 06.01 [January 2006]
period 05.12 [December 2005]
period 05.11 [November 2005]
period 05.10 [October 2005]
period 05.09 [September 2005]
period 05.08 [August 2005]
period 05.07 [July 2005]
period 05.06 [June 2005]
period 05.05 [May 2005]
period 05.04 [April 2005]
period 05.03 [March 2005]
period 05.02 [ February 2005]
period 05.01 [January 2005]
period 04.12 [December 2004]
period 04.11 [November 2004]
period 04.10 [October 2004]
period 04.09 [September 2004]
period 04.08 [August 2004]
period 04.07 [July 2004]
period 04.06 [June 2004]
period 04.05 [May 2004]
period 04.04 [April 2004]
period 04.03 [March 2004]
period 04.02 [ February 2004]
period 04.01 [January 2004]
period 03.12 [December 2003]
period 03.11 [November 2003]
period 03.10 [October 2003]
period 03.09 [September 2003]
period 03.08 [August 2003]
period 03.07 [July 2003]
period 03.06 [June 2003]
period 03.05 [May 2003]
period 03.04 [April 2003]
period 03.03 [March 2003]
period 03.02 [ February 2003]
period 03.01 [January 2003]
period 02.12 [December 2002]
period 02.11 [November 2002]
period 02.10 [October 2002]
period 02.09 [September 2002]
period 02.08 [August 2002]
period 02.07 [July 2002]
period 02.06 [June 2002]
period 02.05 [May 2002]
period 02.04 [April 2002]
period 02.03 [March 2002]
period 02.02 [ February 2002]
period 02.01 [January 2002]
period 01.12 [December 2001]
period 01.11 [November 2001]
period 01.10 [October 2001]
period 01.09 [September 2001]
period 01.08 [August 2001]
period 01.07 [July 2001]
period 01.06 [June 2001]
period 01.05 [May 2001]
period 01.04 [April 2001]
period 01.03 [March 2001]
period 01.02 [ February 2001]
period 01.01 [January 2001]
period 00.12 [December 2000]
period 00.11 [November 2000]
period 00.10 [October 2000]
period 00.09 [September 2000]
period 00.08 [August 2000]
period 00.07 [July 2000]
period 00.06 [June 2000]
period 00.05 [May 2000]
period 00.04 [April 2000]
period 00.03 [March 2000]
period 00.02 [ February 2000]
period 99.12 [December 1999]
period 99.11 [November 1999]
period 99.10 [October 1999]
period 99.09 [September 1999]
period 99.08 [August 1999]
period 99.07 [July 1999]
period 99.06 [June 1999]
period 99.05 [May 1999]
period 99.04 [April 1999]
period 99.03 [March 1999]
period 99.02 [ February 1999]
period 99.01 [January 1999]
period 98.12 [December 1998]
period 98.11 [November 1998]
period 98.10 [October 1998]
period 98.09 [September 1998]
period 98.08 [August 1998]
period 98.07 [July 1998]
period 98.06 [June 1998]
period 98.05 [May 1998]
period 98.04 [April 1998]
period 98.03 [March 1998]
period 98.02 [ February 1998]
period 98.01 [January 1998]
Values of the differences between TAI and the local atomic scale of the given laboratory, including relevant
notes
TAI sg
TAI ntsc
TAI nict
TAI it
TAI apl
TAI aus
TAI ch
TAI crl
TAI csao
TAI f
TAI ien
TAI inpl
TAI jatc
TAI kris
TAI nist
TAI nml
TAI nrc
TAI pl
TAI ptb
TAI so
TAI su
TAI usno
TAI tl
Values of the differences between UTC and its local representation by the given laboratory, including relevant
notes
and, since January 2007, the respective uncertainties.
UTC nis
UTC nimb
UTC tcc
UTC jv
UTC cnmp
UTC it
UTC mike
UTC nict
UTC bim
UTC za
UTC mkeh
UTC by
UTC lv
UTC eim
UTC siq
UTC aos
UTC apl
UTC aus
UTC bev
UTC birm
UTC cao
UTC ch
UTC cnm
UTC crl
UTC csao
UTC csir
UTC dlr
UTC dtag
UTC gum
UTC ien
UTC ifag
UTC igma
UTC inpl
UTC ipq
UTC kris
UTC lds
UTC msl
UTC nao
UTC nim
UTC nist
UTC nml
UTC npl
UTC npli
UTC nrc
UTC nrlm
UTC omh
UTC onba
UTC onrj
UTC op
UTC orb
UTC ptb
UTC roa
UTC scl
UTC smu
UTC so
UTC sp
UTC su
UTC tl
UTC tp
UTC tug
UTC ume
UTC usno
UTC vsl
UTC lt
UTC nmc
UTC pl
UTC nimt
UTC nmij
UTC nmls
UTC ntsc
UTC psb
UTC sg
UTC dmdm
UTC igna
UTC smd
UTC nrl
UTC kim
UTC vmi
UTC ua
UTC zmdm
UTC inti
UTC kz
Values of the differences between TAI and UTC and the respective local scales, evaluated for two-month periods until the end of 1997
Values 976
Values 975
Values 974
Values 973
Values 972
Values 971
Values 966
Values 965
Values 964
Values 963
[UTC(lab1)-UTC(lab2)] obtained by the TWSTFT link, as published in the BIPM TWSTFT reports
TWSTFT sp-ptb
TWSTFT op-ptb
TWSTFT roa-ptb
TWSTFT aus-nict
TWSTFT nict-ptb
TWSTFT nmij-nict
TWSTFT tl-nict
TWSTFT it-ptb
TWSTFT ntsc-nict
TWSTFT ch-ptb
TWSTFT npl-nist
TWSTFT npl-ptb
TWSTFT npl-vsl
TWSTFT nist-ptb
TWSTFT tug-ptb
TWSTFT usno-npl
TWSTFT usno-ptb
TWSTFT vsl-ptb
BIPM Two-Way Satellite Time and Frequency Transfer Reports
no. 23 [ February 2003]
no. 22 [September 2002]
no. 21 [June 2002]
no. 20 [March 2002]
no. 19 [December 2001]
no. 18 [ February 2001]
no. 17 [January 2001]
no. 16 [November 2000]
no. 15 [August 2000]
no. 14 [June 2000]
no. 13 [May 2000]
no. 12 [March 2000]
no. 11 [ February 2000]
no. 10 [January 2000]
no. 09 [December 1999]
no. 08 [November 1999]
no. 07 [October 1999]
no. 06 [September 1999]
no. 05 [August 1999]
no. 04 [July 1999]
no. 03 [June 1999]
no. 02 [May 1999]
no. 01 [April 1999]
Most recent schedules for common-view observations of GPS and GLONASS satellites
Schedule gps.54 [April 2010]
Schedule gps.53 [October 2009]
Schedule gps.52 [April 2009]
Schedule gps.51 [October 2008]
Schedule gps.50 [April 2008]
Schedule glo.25 [April 2008]
Schedule gps.49 [October 2007]
Schedule glo.24 [October 2007]
Schedule gps.48 [April 2007]
Schedule glo.23 [April 2007]
Schedule gps.47 [September 2006]
Schedule glo.22 [September 2006]
Schedule gps.46 [April 2006]
Schedule glo.21 [April 2006]
Schedule gps.45 [September 2005]
Schedule glo.20 [September 2005]
Schedule gps.44 [March 2005]
Schedule glo.19 [March 2005]
Schedule gps.43 [September 2004]
Schedule glo.18 [September 2004]
Schedule gps.42 [April 2004]
Schedule glo.17 [April 2004]
Schedule gps.41 [September 2003]
Schedule glo.16 [September 2003]
Schedule gps.40 [April 2003]
Schedule glo.15 [April 2003]
Schedule gps.39 [October 2002]
Schedule glo.14 [October 2002]
Schedule gps.38 [April 2002]
Schedule glo.13 [April 2002]
Schedule gps.37 [October 2001]
Schedule glo.12 [October 2001]
Schedule gps.36 [April 2001]
Schedule glo.11 [April 2001]
Schedule gps.35 [October 2000]
Schedule glo.10 [October 2000]
Schedule gps.34 [April 2000]
Schedule glo.09 [April 2000]
Schedule gps.33 [October 1999]
Schedule glo.08 [October 1999]
Older files can be accessed directly from the ftp site (
62.161.69.5
or
ftp2.bipm.org
).
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