The Air Almanac 2018 (CD-ROM)

The Air Almanac 2018 (CD-ROM)
The Air Almanac 2018 (CD-ROM)
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The Air Almanac contains the astronomical data required for air celestial navigation. The CD-ROM contains the same data found in the previously published book.  It 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 data are produced in collaboration between The U.S. Naval Observatory in the U.S. and Her Majesty's Nautical Almanac Office (HMNAO) in the UK. HMNAO maintains the copyright on the material it produces.


Related items:

Astronomical Almanacs and Navigation Guides resources collection can be found here:

USACE Navigational Charts collection can be found here:

Aviation resources collection can be found here:

Other products created by the U.S. Naval Observatory (USNO) can be found here:

Table of Contents

Table of Contents:
1 – 734 “Daily Pages”, tabulated in 10 minute intervals, for edition year
F1 – F2 Navigational Star Chart
F3 – F4 Star index, Interpolation of GHA chart, for edition year
Title  Title page
A1  Preface
A2 – A17 Explanation of use of book
A18 – A19 Symbols and Abbreviations
A20 – A23 Standard Times of Many Countries
A24 – A25 Explanation of Sky Diagrams
A26 – A121 Sky Diagrams for Air Celestial Navigation, for edition year
A122 – A124  Planet Location Diagrams, for edition year
A125 – A129 Star Recognition Diagrams
A130 – A145 Sunrise, Sunset and Civil Twilight, for edition year
A146 – A152 Rising, Setting, and Depression Graphs
A153  Sunlight and Twilight at Polar Regions
A154 – A156 Semi-duration of Moonlight at Polar Regions, for edition year
A157 – A163 Stellar data, for edition year
A164  Interpolation of G.H.A. of the Sun
A165  Interpolation of G.H.A. of Aries
A166  Conversion of arc to time
A167  Corrections to Sextant Altitude
Insert  CD-ROM, PDF page images of current edition
Cover 3 Dome refraction, Corrections to Marine Sextant, Contents


Navigators, sailors, and astronomers will benefit from this resource the most.  However, students pursuing degrees for a Bachelor of Science in Marine Transportation or research for Principles of Celestial Navigation or Astro/Nav classes may be interested in this volume. Professional libraries in marine transportation companies that may support marine navigation and logistic operations, or intermodal marine technician positions, as well as academic institutions that provide astronomy and maritime studies programs should have this resource available as a primary source reference work.

Product Details

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Defense Dept., Navy, Nautical Almanac Office
Key Phrases:
  • Air Almanac
  • Ephemeris
  • Almanacs
  • Compact Disc Read Only Memory
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