– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
Search facility:


| Site map | News | Contact us
FTP server of the BIPM Time Department
Contents
Data
Circular T
UTCr
TT(BIPM)
Other products
Links
Scales
Annual Reports
Values of the differences between UTC and its local representation by the given laboratory, including relevant notes and, since January 2007, the respective uncertainties.
View
Weights of clocks participating in the computation of TAI
View
Frequency drifts of clocks participating in the computation of TAI
View



Fractional frequency of EAL from primary frequency standards
View
Values of the differences between TAI and the local atomic scale of the given laboratory, including relevant notes
View
Rates relative to TAI of clocks participating in the computation of TAI
View
[UTC(lab1)-UTC(lab2)] obtained by the TWSTFT link
View
Relations of UTC and TAI with predictions of UTC(k) disseminated by GNSS and with the GNSS times
View



Acronyms and locations of the timing centres
View
Leap seconds
View

Older files can be accessed directly from the ftp site (62.161.69.5 or ftp2.bipm.org).


Other international metrology data centres:





International metrology publications
SI Brochure
Guides in metrology
Metrologia
Circular T
IERS Conventions Center
Recommended values of standard frequencies
Related articles
International reference timescales
Recent publications of the BIPM Time Department