NOTICE TO USERS
Commander, Naval Meteorology and Oceanography Command is consolidating the command's web presence in accordance with Department of Defense (DoD) and Navy guidance. The U.S. Naval Oceanography portal will be the single access point for all public facing Meteorology and Oceanography products and services. This publicly-accessible portal is currently online at http://www.usno.navy.mil and is being populated. In the near future, non-DoD users will be redirected to this portal.
DoD customers can access all operational data, products and services via the NIPRnet Naval Oceanography Portal site at https://oceanography.navy.mil (CAC required).
The Air Almanac contains the astronomical data required for air
celestial navigation. The book provides the following data tabulated at
10-minute intervals to a precision of 1 arcminute: the Greenwich hour angle and
declination of the Sun, Moon, and three navigational planets; the Greenwich hour
angle of Aries; rise and set times of the Moon for a range of latitudes; and
other data. Each edition also contains sky diagrams for each month; sunrise,
sunset, and twilight tables; and positions of the navigational stars. The
Air Almanac is available nine months in advance of its edition date.
The 2006 and 2007 editions of The Air Almanac consist of the usual printed publication plus a CD-ROM version. The CD-ROM contains the same information as found in the printed publication, but in Portable Document Format (PDF). Beginning with the 2008 edition, The Air Almanac is available only in the CD-ROM version. It is expected that those requiring a paper copy of certain pages will have access to a printer.
Increased printing costs of The Air Almanac and a survey of user needs were factors considered in the U.S. Naval Observatory's decision to produce The Air Almanac on CD-ROM.
The history of The Air Almanac is found here.
- The Air Almanac Errata page contains information on errors in the publication.
- Ordering Information contains instructions on how to order the The Air Almanac.
- The Depository Libraries around the United States retain a reference copy for each year of publication.
