This this video, we learn how to calculate the Greenwich Hour Angle, abbreviated GHA, on the sight reduction form.
This video is part of a series that teaches celestial navigation using techniques that have been used for centuries. In this course, you will learn some basics needed to find your location using a sextant and elementary math.
This course is free and available to everyone, and should take less than two hours to complete.
The course is hosted by Vanderbilt University at:
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