– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Consultative Committee for Time and Frequency (CCTF)
The Consultative Committee for the Definition of the Second (CCDS) was set up in 1956. Its name was changed to Consultative Committee for Time and Frequency (CCTF) by the CIPM in 1997.

Present activities concern matters related to the definition and realization of the second, establishment and diffusion of International Atomic Time (TAI) and Coordinated Universal Time (UTC), and advice to the CIPM on matters related to time and time scales.
 
President:
Dr N. Dimarcq
Vice-President, Research and Innovation
Université Côte d'Azur
France
 
 
Executive Secretary:
Dr P. Tavella
Bureau international des poids et mesures
France
President:    Dr N. Dimarcq
Vice-President, Research and Innovation
Université Côte d'Azur
France
Executive Secretary:    Dr P. Tavella
Bureau international des poids et mesures
France
Member(s):  
  • All-Russian Scientific Research Institute of Physical Technical Measurements, Rosstandart [VNIIFTRI], Moscow
  • Central Office of Measures [GUM], Warsaw
  • Centro Nacional de Metrología [CENAM], Querétaro
  • CSIR National Physical Laboratory of India [NPLI], New Delhi
  • Federal Institute of Metrology METAS [METAS], Bern-Wabern
  • Korea Research Institute of Standards and Science [KRISS], Daejeon
  • National Institute of Information and Communications Technology [NICT], Tokyo
  • National Institute of Metrological Research/Istituto Nazionale di Ricerca Metrologica [INRIM], Torino
  • National Institute of Metrology [NIM], Beijing
  • National Institute of Standards and Technology, United States Department of Commerce [NIST], Gaithersburg
  • National Measurement Institute, Australia [NMIA], Lindfield
  • National Metrology Institute of Japan, AIST [NMIJ/AIST], Tsukuba
  • National Metrology Institute of South Africa [NMISA], Pretoria
  • National Metrology Institute of Turkey/TÜBITAK Ulusal Metroloji Enstitüsü [UME], Gebze-Kocaeli
  • National Physical Laboratory [NPL], Teddington
  • National Physical Laboratory of Israel [INPL], Jerusalem
  • National Research Council of Canada [NRC], Ottawa
  • Observatoire de Paris/Systèmes de Référence Temps-Espace [LNE-SYRTE], Paris
  • Observatoire Royal de Belgique [ORB], Brussels
  • Physikalisch-Technische Bundesanstalt [PTB], Braunschweig
  • Real Instituto y Observatorio de la Armada [ROA], Cadiz
  • RISE Research Institutes of Sweden AB [RISE], Borås
  • Space Research Centre of Polish Academy of Sciences [SRC], Warsaw
  • Technical University of Graz [TUG], Graz
  • U.S. Naval Observatory [USNO], Washington D.C.
  • VSL Dutch Metrology Institute [VSL], Delft
  • Official observer(s):   
  • Metrology Institute of the Republic of Slovenia, Ministry of Higher Education, Science and Technology [MIRS], Celje
  • National Metrology Centre, Agency for Science, Technology and Research [NMC, A*STAR], Singapore
  • Observatório Nacional/Divisão Serviço da Hora [ON/DSHO], Rio de Janeiro
  • Telecommunication Laboratories, ChungHwa Telecom Co. Ltd [TL], Taoyuan City
  • Note:

      The Director of the BIPM is a member, ex officio, of all Consultative Committees.
      Next meetings:
    26–30 October 2020: First session (on-line) of the 22nd meeting of the CCTF and related meetings (on-line)
    8–12 March 2021: Second session of the 22nd meeting of the CCTF and related meetings
    27 June to 1 July 2022: 23rd meeting of the CCTF and related meetings