Operating Status of Japan Standard Time and Standard Radio Signals
News and Announcements
Service Announcements
Archive
Current status of JJY Standard Radio Time and Frequency Signals
Current transmission status
JJY Standard Radio Time and Frequency Signals
40kHz: Ohtakadoya-yama Station
(Fukushima prefecture)
60kHz: Hagane-yama Station (Fukuoka / Saga prefecture)
Public NTP Server
December 22, 2025
Scheduled network maintenance of NICT Public NTP Service(2025-12-20,21)
October 31, 2025
Scheduled system maintenance of NICT Public NTP Service(2025-10-31)
Public NTP Server status information
Archive
Hikari Telephone JJY
December 12, 2025
Scheduled system maintenance of Hikari Telephone JJY（2025-12-12）
December 1, 2025
Hikari Telphone JJY status information
Archive
Telephone JJY
Telephone JJY status information
Archive
Contact
: horonet |
|
| Phone | : 042-327-6985 |
Electromagnetic Standards Research Center
Space-Time Standards Laboratory
Japan Standard Time Group
Access - Directions to NICT's Koganei Headquarters