- A press release about implementation of leap second was issued.
(Japanese version only)
- NICT started an experimental operation of time supplying system using the Hikari Denwa line.--Press release--(Japanese version only)(2016/05/26)
- Maintenance work of transmission facilities for FY2016 was completed.
Welcome to Japan Standard Time (JST) Group. JST Group plays an important role in the Generation, Comparison, and Dissemination of Japan Standard Time and Frequency standard. Please choose the contents you'd like to use.
|What we do|
|The Information of Standard-time and Frequency-signal Emission (JJY) (The users of radio wave clock see here for more information, please)|
|Time Dissemination Service (NTP,TEL-JJY,Time Business,calibration)|
|FAQs and Data|
Please contact us if you have any questions, comments, corrections, or suggestions.