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What's New

What's New
( Information on Japan Standard Time Group )

  • No leap second will be introduced on July 1, 2023. (2023/1/10)
  • The schedule of transmission suspend of the wave which has been postponed due to the impact of the typhoon 11th fixed.(2022/11/8)
  • The schedule of the periodic maintenance of facilities in the LF Standard Time and Frequency Transmission Station has partly been postponed.(2022/10/7)
  • Simultaneous suspension of both LF Standard Time and Frequency Transmissions due to Typhoon No. 11(2022/9/12)
  • The way to register using the Hikari-telephone JJY has changed. (2022/9/1)
  • Holding information of Universal Communication Research Institute Open House 2022 (Kobe)(2022/7/27)
  • No leap second will be introduced on January 1, 2023. (2022/7/6)
    (No leap second was introduced on July 1, 2022.)
  • Periodic maintenance of facilities in the LF Standard Time and Frequency Transmission Stations will be performed as informed. (Links to the Japanese page) (2022/7/1)
  • NICT Open House 2022 has been finished. Some of the on-line contents are still available now. (Until November 30, 2022) (2022/6/29)
  • Press Release: World's first use of the "Optical lattice clock" to maintain National standard time.
    〜Synchronization with UTC became possible only with the clock of NICT〜
    (2022/6/10)
  • Holding information of NICT Open House 2022(2022/6/10)
  • At the 20th anniversary of the Haganeyama Transmission Station, we received a large number of reports (140 in Japan and 8 overseas). Thank you for your cooperation.
  • Time dissemination service using http/https was terminated as of March 31, 2022.Time dissemination service using http/https will end on March 31, 2022.
    Break schedule from May 2021
    The last day the service to be provided shall be March 5, 2022. (2022/1/18)
  • Ohtakadoya-yama LF Standard Time and Frequency Transmission Station will have a temporary stop of transmission due to an extra maintenance of the antenna during the time below.
    09:00〜17:00 (JST) Wednesday, January 19, 2022

  • No leap second will be introduced on July 1, 2022. (2022/1/6)
    (No leap second was introduced on January 1, 2022.)



Past Information

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