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; and other data. Each edition also contains a sight reduction table; sight reduction formulas; and various correction tables for sight reduction. There is a useful concise sight reduction form at the back of the book. The Nautical Almanac is available several months in advance of its edition date. Related products: Check out our Navigation by Water resources collection here: https://bookstore.gpo.gov/catalog/navigation-water Almanacs & Navigation Guides area available here: https://bookstore.gpo.gov/catalog/almanacs-navigation-guides US Army Corps of Engineers (USACE) Navigational Charts collection can be found here: https://bookstore.gpo.gov/catalog/usace-navigational-charts

The Astronomical Almanac is a joint publication of the U.S. Nautical Almanac Office, United States Naval Observatory (USNO) in the United States, Her Majesty's Nautical Almanac Office (HMNAO), and the United Kingdom Hydrographic Office (UKHO). This annual publication contains precise ephemerides of the Sun, Moon, planets, and satellites; data for eclipses and other astronomical phenomena for a given year; and serves as a worldwide standard for such information. Related products: The Astronomical Almanacs & Phenomena collection can be found here: https://bookstore.gpo.gov/catalog/transportation-navigation/almanacs-navigation-guides/astronomical-almanacs-phenomena The Almanacs & Navigation Guides collection is available here: https://bookstore.gpo.gov/catalog/transportation-navigation/almanacs-navigation-guides Other products produced by the United States Navy, Naval Observatory (USNO) can be found here: https://bookstore.gpo.gov/agency/927

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 edition.

Available as an ebook, Reeds Nautical Almanac is provided in Web PDF (ePDF) format for viewing on all compatible devices (including tablets, laptop and desktop computers). Reeds Nautical Almanac is the indispensable trusted annual compendium of navigational data for yachtsmen and motorboaters, and provides all the information required to navigate Atlantic coastal waters around the whole of the UK, Ireland, Channel Islands and the entire European coastline from the tip of Denmark right down to Gibraltar, Northern Morocco, the Azores and Madeira. The 2018 edition continues the Almanac's tradition of year on year improvement and meticulous presentation of all the data required for safe navigation. Now with an improved layout for easier reference and with over 45,000 annual changes, it is regarded as the bible of almanacs for anyone going to sea. The 2018 edition is updated throughout, containing over 45,000 changes, and includes: 700 harbour chartlets; tide tables and tidal streams; buoyage and lights; 7,500 waypoints; invaluable passage notes; distance tables; radio, weather and safety information; first aid section. The ebook incorporates the Reeds Marina Guide. Also available: free supplements of up-to-date navigation changes from January to June at: www.reedsnauticalalmanac.co.uk

The Air Almanac 2018 contains the astronomical data required for air celestial navigation, making it a necessary resource for all pilots and others attempting to chart routes based on celestial bodies. This edition of the Almanac includes information for the year 2018 on the following topics: Sunrise, sunset, and twilight tables Sky diagrams for each month Rise and set times of the Moon for a range of latitudes Positions of the navigational stars The Almanac also provides the Greenwich hour angle and declination of the Sun, Moon, and three navigational planets along with the Greenwich hour angle of Aries, all tabulated at 10-minute intervals. With all of this data organized into two pages per calendar day, this new paperback edition provides comprehensive, organized navigational information for each day of the year.