BIPM Time Dept database
BIPM Time Department Data Base

You wish to report new clock to BIPM ? You need a BIPM clock code :

Clock code are 7 digits numbers like , the form below will help you to generate and validate BIPM clock code. (The generic rule for BIPM clock code generation is defined here.)

Generation of the BIPM clock code :

Select laboratory :
Select clock maker & type : (if not found in the list, please contact us)
Enter clock serial number :

Check if the generated clock code is already assigned to any TAI contributing clock :