– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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CCTF Task Groups

  • CCTF Task Force on Updating the Roadmap for the redefinition of second (CCTF-TFU)
    • CCTF-TFU Sub-Group A on Atomic frequency standards, and possible redefinition approaches (CCTF-TFU-SGA)
    • CCTF-TFU Sub-Group B on Needs of user communities, NMIs, and Liaisons (CCTF-TFU-SGN)
    • CCTF-TFU Sub-Group C on TF Dissemination and time scales (CCTF-TFU-SGTF)

  • CCTF Task Group on leap seconds in UTC - building a consensus for a continuous timescale (CCTF-TGLS)

  • CCTF Task Group on Traceability to UTC from GNSS measurements (CCTF-TGT)