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What time is it?
Summary
International Atomic Time
Computation of "Rapid UTC" (UTCr)
Clock comparisons
Joint projects
Future work
BIPM calibrations of time transfer equipment
BIPM services in the field of time, frequency and gravimetry
Technical partnerships of the Time Department
Recent publications
BIPM Annual Report on Time Activities 2013
What time is it?
No leap second in June 2014
FTP server of the Time Department
Related articles
FTP server of the Time Department
Recommended values of standard frequencies
Direct access


Coordinated Universal Time (UTC), maintained by the BIPM, is the time scale that forms the basis for the coordinated dissemination of standard frequencies and time signals. The UTC scale is adjusted by the insertion of leap seconds to ensure approximate agreement with the time derived from the rotation of the Earth. These leap seconds are inserted on the advice of the International Earth Rotation and Reference Systems Service (IERS).

Physical realizations of UTC – named UTC(k) – are maintained in national metrology institutes or observatories contributing with their clock data to the BIPM.

The time displayed here is for demonstration only, and should not be used as a standard. If you need accurate time, you should refer to any authority responsible for time dissemination services.


Related articles

FTP server of the Time Department
Recommended values of standard frequencies