- Transmission of LF standard time and frequency signals will be temporarily suspended for renewal and maintenance of the facilities.(Japanese version only)
- Extension of the period. (Transmission of LF standard time and frequency signals from Ohtakadoya-yama station will be temporarily suspended for renewal and maintenance of the facilities.)(Japanese version only)
- The renewal of facilities of Hagane-yama LF standard time and frequency transmission station was completed.(Japanese version only)
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.