- A leap second briefing session will be held.(Japanese version only)
- 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)
- Transmission of LF standard time and frequency signals will be temporarily suspended for maintenance of facilities. (Japanese version only)(2016/07/07)
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.