What's New

• No leap second will be introduced on July 1, 2021.　(2021/1/8)
  
• Time dissemination service via networks to be integrated into NTP.　(2020/7/14)
  Approach to the end of “time dissemination service using http/https protocol" and Temporary break schedule
  
• No leap second will be introduced on January 1, 2021.　(2020/7/9)
  
• Periodic maintenance of facilities in the LF Standard Time and Frequency Transmission Stations will be performed as informed.(2020/7/7)
  
• No leap second will be introduced on July 1, 2020.　(2020/1/8)
  
• An unexpected service disruption may occur with Time dissemination service using "http/https" protocol due to excessive inclease of server load. (2020/1/29)
• Transmission of signal accuracy degradation was made at Hagane-yama LF station on October 24, 2019. (2019/10/25)
  
• Periodic maintenance of facilities in the LF Standard Time and Frequency Transmission Stations will be performed as informed.(2019/7/5)
  --The maintenance has been completed. Thank you for your understanding.--
• No leap second will be introduced on January 1, 2020.　(2019/7/5)
  
• NICT Open House 2019 was held on June 21-22. We appreciate your visit. (2019/6/24)
• Ohtakadoya-yama LFStandard Time and Frequency Transmission Station celebrates the 20th anniversary this year.　(2019/6/10)
  
• NICT ANNOUNCEMENT:The Optical Clock was used for calibration of the length of a second at the latest UTC for the first time in the world. BIPM adopted NICT's Optical Clock in estimating the scale interval of UTC.(Japanese version only)(2019/2/7)
  
• NICT ANNOUNCEMENT: NICT starts the official opperation of"Hikari Telephon JJY" service on February 1, 2019.　(2019/1/28)
  Directions for use (Japanese version only)
  
• "Telephon JJY" service is due to end at the end of March, 2024.　(2019/1/28)
  
• No leap second will be introduced on July 1, 2019.　(2019/1/8)
  
• Transmission of LF standard time and frequency signals became normal status after a periodic maintenance of facilities.　(2018/10/31)
  
• No leap second will be introduced on January 1, 2019.　(2018/7/6)
  
• Open house at NICT headquarters was held on June 29-30, 2018. We appreciate your visit.
  
• We opened Kobe Sub-Station for Japan Standard Time, and started its operation on June 10, 2018.(2018/6/13)
  
• No leap second will be introduced on July 1, 2018.
  (Japanese version only)(2018/01/11)
• No leap second adjustment was carried out on January 1, 2018.
  (Japanese version only)
  

Past Information