BIPM Time Department Data Base

BIPM Time Department API Web Service

To answer the need of providing machine readable data, the BIPM Time Department started providing access to machine readable data through automatized process.

Results are still available using FTP protocol, this remains unchanged.
In addition to the historical FTP access, it is proposed an application programming interface (API) using GET method which gives access to machine readable data regarding various time scales. 
The method to access these data is using HTTP/HTTPS protocol: This can be done using utilities to transfer data from a server (such as cURL, wget or any programming languages supporting HTTP protocol).
Data are provided in standard exchange format, such as JSON, CSV and text. 

See below documentations related to each version of the API.
VersionDocumentationDateChanges|Features
0.1Access here17/02/2020test version
0.2-betaAccess here02/06/2021test version
  • fix : incorrect formatting when failure
  • fix : format change: left alignment of MJD in TXT files
  • feature : New features in JSON file (data statistics)
  • feature : Execution error codes improved and debug messages added




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