What's New
What's New
Past Information
- Information about the temporary stop of emission at Ohtakadoya-yama LFStandard Time and Frequency Transmission Station due to the renewal of airplane warning lights. (2021/11/4)
The previous information of 2021/11/4 has partly been changed. (2021/12/7)
- No leap second will be introduced on January 1, 2022. (2021/7/6)
- Periodic maintenance of facilities in the LF Standard Time and Frequency Transmission Stations will be performed. (Links to a Japanese page) (2021/7/1)
--The maintenance has been completed. Thank you for your understanding.--
- Time dissemination service using http/https will end on March 31, 2022. (2021/4/1)
Break schedule from May 2021
- 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)
Temporary break schedule (until April 2021)
- 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)
