A subset of NICT Public NTP servers distributed incorrect time data during the period below. We apologize for any inconvenience this may have caused.

1. Affected service and incident period
- NICT Public NTP Service (some subset of servers)
- 2026-09-09 (Wednesday) 10:20 - 10:31 JST

2. Cause
- A detailed investigation is ongoing.
- Occurred during scheduled maintenance.

3. Current status
The service has recovered and is operating normally.

4. Impact on other time distribution services None.

Contact Information:
Japan Standard Time Group
Space-Time Standards Laboratory
Electromagnetic Advanced and Infrastructure Research Center Radio Research Institute NICT, Japan
E-mail: horonet@ml.nict.go.jp