Under direction of the Chief of Naval Operations, the nature of the Naval Observatory's web site is changing from its traditional appearance to a portal which combines all of the Navy Oceanography Community's products and services. 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 but will be part of a larger portal. DoD customers are directed to our NIPRNet site at https://oceanography.navy.mil/ (CAC required). Questions or comments can be submitted here.
Welcome to the web pages of the Astronomical Applications Department of
the U.S. Naval Observatory.
Our products - almanacs, software, and web services - provide
precise astronomical data for practical applications, serving the
defense, scientific, commercial, and civilian communities.
Sun and Moon rise and set times, Moon phases, eclipses, seasons, positions of solar system objects, and other data
Background information on common astronomical phenomena, calendars and time, and related topics
Astronomical and navigational almanacs, special publications, research reports
Computer almanac for PCs and Macs, and more
Special projects underway in the department
Information about the department and its history
Announcements, product availability, new releases, errata, employment
| This is an official U.S. Navy Web site | Privacy and security notice | External link disclaimer |
