USNO provides both voice announcements of the time, and services to synchronize systems over telephone modems.

Voice Announcers

The voice announcements have the same pattern at both sites, and always begin with the local time (daylight or standard). The local time announcements are made on the minute, and 15, 30, and 45 seconds after the minute. Coordinated Universal Time (UTC) is announced five seconds after the local time.

Time may be delayed on long distance calls.

Time Voice Announcer, Washington, DC:



202-762-1401



202-762-1069



DSN 762-1401

DSN 762-1069



Time Voice Announcer, Colorado Springs, CO:

719-567-6742



DSN 560-6742

Digital Time for MODEMS

These MODEMS operate at 1200 baud, 8N1 only.

From Washington, DC:



202-762-1594



DSN 762-1594



From Colorado Springs, CO: