Description

Presents data for use in astronomical navigation at sea. Includes Jupiter, Saturn, selected stars, our Sun, our Moon, twilight, Sunrise, Sunset, Moonrise, and Moonset. Includes "Index to Selected Stars, 2000" and "Altitude correction tables for Sun, stars, planets" on a separate sheet. Produced jointly by Her Majesty's Nautical Almanac Office, Royal Greenwich Observatory and the United States Naval Observatory. Printed separately in the United Kingdom and in the United States. This tried and true government-printed, hard cover volume preferred by celestial navigators.

For over 150 years the United States Nautical Almanac Office has published The Nautical Almanac, first as part of the American Ephemeris and Nautical Almanac, and then on its own, to provide the US Navy with a convenient form of the astronomical data used for celestial navigation. This book is still the standard resource for marine celestial navigation for the U.S. Navy. The book is produced in collaboration with Her Majesty's Nautical Almanac Office, part of the U.K. Hydrographic Office. That Office maintains the copyright on the material it produces.

The Nautical Almanac contains the following data tabulated at hourly intervals to a precision of 0.1 arcminute:

the Greenwich hour angle and declination of the Sun, Moon, and navigational planets
the Greenwich hour angle of Aries
positions of the navigational stars; rise and set times of the Sun and Moon for a range of latitudes
a sight reduction table
sight reduction formulas
various correction tables for sight reduction
and other data.