In the same way that you take sights of stars for a twilight fix, you can take a sight of the sun at any time of the day. You measure the altitude of the sun above the horizon and compare it to …

Dec 6, 2023 · In this guide, you’ll learn how to manually calculate sunrise and sunset times using only your nautical almanac, ship’s position, and basic time conversion skills – no digital tools …

Celestial navigation uses "sights," or timed angular measurements, taken typically between a celestial body (e.g., the Sun, the Moon, a planet, or a star) and the visible horizon.

Aug 1, 2019 · In this video I show you how to undertake the calculations using a Nautical Almanac.

How to calculate altitude and azimuth using a free and intuitive spreadsheet (excel) after sextant sights (Celestial Navigation) - free software

Jun 11, 2016 · You can use The Nautical Almanac and find the date you'd like to know the approximate sunrise and sunset times for using the latitude figure which is closest to you.

In order to determine latitude, you measure the Sun's altitude at its highest point during the day ( 'local noon') and combine it with: The Sun's declination on that day. Which time factors must …

Oct 12, 2025 · When shooting stars and planets, you can only do so when you see the horizon (light enough) and the stars and planets (dark enough) at the same time, which is called …

This is your indispensable tool for celestial navigation! This powerful calculator is designed specifically for seafarers, providing free access to accurate information about the rise and set …

Nov 13, 2016 · The video gives you instructions on how to do this and how to use the longitude scale on the sheet to measure and then draw in your lines of Longitude. Remember that the …