From Tuesday, 2 May 2017 through Friday, 12 May 2017 the Naval Observatory will perform scheduled network maintenance.
Network degradations or outages impacting our product delivery are possible but should be temporary in nature.
NOTICE TO USERS
Under direction of the Chief of Naval Operations, the nature of the
Naval Observatory's web sites are changing from their traditional appearance
to a portal which combines all of the Navy Oceanography Community's products
As of 15 January 2009, the U.S. Naval Observatory's products
and services will continue to be available at http://www.usno.navy.mil
will be part of a larger portal.
Current clock displays and lunar phase images which use direct links to tycho.usno.navy.mil
may no longer be available.
DoD customers are directed to our NIPRNet
site at https://oceanography.navy.mil