Celestial Navigation · Hour Angle — LHA Adding 360
GHA is 20°00' and your assumed longitude is 50°00' W. What is the LHA?
- A−30°00' (negative; 360° not yet added)
- B330°00'✓ Correct
- C70°00' (wrong sign on longitude)
- D030°00' (sign error)
Explanation
LHA = GHA − W long = 20° − 50° = −30°; add 360° to bring it into range: −30° + 360° = 330°.
Authority: Nautical Almanac, Hour Angle
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