Nautical Almanac 2017

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.
This is the pumpkin-colored book with the stiff covers, the "official" Nautical almanac. For an alternate editions, see  Nautical Almanac Commercial Edition.