2000/12/08現在で日本向けのNTP Primary Time Serversは以下の２サイトです。

33.JP clock.nc.fukuoka-u.ac.jp (133.100.9.2)
   Location: Fukuoka university, Fukuoka, Japan
   Geographic Coodinates: 130:21.81E, 33:32.87N
   Synchronization: NTP V3.3 primary (GPS clock), Heliostation 400/SunOS 4.1.3
   Service Area: Japan/Pacific area
   Access Policy: open access
   Contact: TSURUOKA Tomoaki (tsuruoka@fukuoka-u.ac.jp), YOSHIMURA Kenji (yosimura@tl.fukuoka-u.ac.jp)
   Note: We use a TRAK 8810 GPS STATION CLOCK and a Furuno Electric Co.'s GN-72 GPS receiver respectively.

34.JP clock.tl.fukuoka-u.ac.jp (133.100.11.8)
   Location: Fukuoka university, Fukuoka, Japan
   Geographic Coodinates: 130:21.81E, 33:32.87N
   Synchronization: NTP V3.3 primary (GPS clock), Heliostation 400/SunOS 4.1.3
   Service Area: Japan/Pacific area
   Access Policy: open access
   Contact: TSURUOKA Tomoaki (tsuruoka@fukuoka-u.ac.jp), YOSHIMURA Kenji (yosimura@tl.fukuoka-u.ac.jp)
   Note: We use a TRAK 8810 GPS STATION CLOCK and a Furuno Electric Co.'s GN-72 GPS receiver respectively.