Due to network maintenance, some redundant NTP servers were temporarily unavailable during the following periods:

2025-12-27 (Saturday) 12:50 -2026-01-01 (Thursday) 19:31
2026-01-01 (Thursday) 20:37 -20:38
2026-01-01 (Thursday) 22:17 -22:21
(JST, approximate)


The maintenance was extended due to unexpected issues.
We apologize for any inconvenience.

Original maintenance window announced on 2026-12-25:
2025-12-27 (Saturday) to 2025-12-29 (Monday)
09:00 - 18:00 (JST)