2015 through 2018
Essential Celestial Navigation downloads
Increments & Corrections, Altitude Corrections & Polaris Q Corrections
Sight Reduction Tables
‣ Complete Sun & Star sight reduction Procedure
‣ Methods & Forms
‣ Formulas for Celestial Navigation
‣ Artificial Horizon
‣ 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.
‣ Celestial Navigation Forum
Discuss and learn about Celestial Navigation- All are welcome
‣ The Terrestrial Almanac- 2018 through 2020
Calendars for the World and United States
Agreeable to the Northern and Southern Hemispheres
Also has Day of Year number chart
The American Practical Navigator
Organized in a useful manner
Download the Chapters you want or the entire work
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.
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.
Copyright ©2017 TheNauticalAlmanac.com
All material on this website, except Pub. 229 & Pub. 249, or where copyright is imprinted, is the property of TheNauticalAlmanac.com. You are free to copy and distribute, but not sell, any material on these webpages provided attribution to the TheNauticalAlmanac.com is included.
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fair winds, clear skies & following seas