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News, Tours, & Events

Information on tours of the U.S. Naval Observatory, the latest News from the Naval Observatory, scientific colloquia, and other events at USNO.

News! from the Naval Observatory


Tour Information

Public tours of the U.S. Naval Observatory have been suspended until further notice.

Scientific Colloquia

Scientific colloquia at USNO are mainly for the staff, but scientists from other institutions are welcome to attend.  Admission procedures and the schedule of upcoming talks can be found here.

USNO Master Clock Time
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