Due to network maintenance, some redundant NTP servers might be temporarily unavailable during the following time windows:/

2026-02-14 (Saturday)
window1 : 01:00 - 04:30 (JST, approximate)
window2 : 09:00 - 17:00 (JST, approximate)
note : As for maintenance window 2, actual downtime is expected to be less than one hour.