The Nautical Almanac

The cornerstone for all celestial navigation, listing the celestial bodies used for navigation, a sight reduction table, and other information valuable to the offshore navigator. The content of this edition is identical to the United States Naval Observatory 2021 edition.

Provides astronomical data for air navigation. Contains ephemeral data for the year, together with auxiliary tables and graphs, and a brief explanation of the use of the volume. Presents data for the Sun, Moon, Aries, planets, and stars. Includes a CD-ROM in a pocket which contains the same information as found on the printed publication in Portable Document Format (PDF). Requires Adobe Acrobat Reader or similar product to view and print.

Data in this book are no longer valid for navigation. It is preserved in print because many training programs (including USCG and US Navy ) use examples from 1981 to teach celestial navigation. USCG license exams require data from this almanac. These exams also require Sight Reduction Tables, Pub 229, Vol. 2 and a 2102-D Star Finder.