The Nautical Almanac
The free online Nautical Almanac
The world's most complete source of free celestial navigation information



The Nautical Almanac
1911, 1981 & 2000 through 2025
All Almanacs were generated by Pyalmanac 2017


Everything you need
for 2017

click here


The Sun only Almanac
2015 through 2025
All Almanacs were generated by Pyalmanac 2017

Astronomical Phenomena
2015 through 2017



Essential Celestial Navigation downloads

Increments & Corrections for the Sun (on 2 pages)
Increments & Corrections for Sun, Planets, Aries, Moon (the "yellow pages")


Explanation of The Nautical Almanac Daily pages

PUB. NO. 249
  (download individual Latitudes or Volumes) (courtesy of Celestaire)

PUB. NO. 229  (download individual volumes)

ALTITUDE CORRECTION TABLES 10--90—SUN,STARS,PLANETS
Altitude Correction Tables for the Moon
Polaris- Correction for (Q) (2017)

TABLE 4- GHA and Declination of the Sun for the Years 2001 to 2036
How to use- TABLE 4- GHA and Declination of the Sun for the Years 2001 to 2036- Argument “Orbit Time”

TABLE 4- Long Term GHA Aries (easily find Aries for years 2011 to 2019- on 2 pages)

TABLE 5- Correction to Tabulated Altitude for Minutes of Declination
TABLE 3- Conversion of Arc to Time

Navigational Star Chart

2017 Navigational Stars SHA & Dec
2016 Navigational Stars SHA & Dec

The Air Almanac- 2017 (be patient- it's 900 pages)
The Air Almanac- 2016

Universal Plotting Sheet



Celestial Navigation Forum
Discuss and learn about Celestial Navigation.
All are welcome.


    Complete Sun & Star sight reduction Procedure

‣  Methods & Forms

‣  Celestial Navigation Formulas

‣  Useful Links

‣  Sun Sight Reduction Excel Spreadsheet
            A Sun sight reduction program!  From BackBearing.com

Complete Celestial Sight Reduction Excel Spreadsheet
            Covers all navigational bodies. 

Complete Celestial Sight Reduction Spreadsheet in ODS format
            Covers all navigational bodies.  Can be used in LibreOffice Calc.



Bowditch
American Practical Navigator
The complete work & various selections




The Nautical Almanacs and Sun Almanacs listed at the top of our site were created or derived from a program written by the great Norwegian sailor Enno Rodegerdts.  Without his work this site wouldn't exist.

http://sv-inua.net/the-nautical-almanac

Disclaimer and Warning
Prior to use verify the accuracy of The Nautical Almanac or data you download from this site.  They SHOULD NOT and MUST NOT be relied upon for celestial navigation work of any sorts or any purpose whatsoever.  You use them at your own risk or peril.


Write to us