Question 1658Navigation General

The correct answer is C) increases at a rate of approximately 15° per hour. The Geographical Hour Angle (GHA) of a star increases at a rate of approximately 15° per hour as the Earth rotates on its axis. This is because the Earth completes one full rotation of 360° in 24 hours, resulting in an increase of 15° per hour (360° / 24 hours = 15° per hour). The other options are incorrect because the GHA does not decrease, nor does it increase at a rate of 4° per hour, which would be an unrealistic rate of change.