1. See " hour angle " in the Glossary of the Astronomical Almanac. 2. The hour angle of the vernal point is, by definition, the observer's sidereal time. 3. I almost have it, but I have a question about " local hour angle ". 4. It is conflating hour angle with something else. 5. But these equations depend only on the observer's latitude, hour angle , and delta ( the declination ). 6. The latitude of the geographic position is called declination, and the longitude is usually called the hour angle . 7. This formula calculates the'True Hour Angle 'which is compared to the assumed longitude providing a correction to the assumed longitude. 8. It has the capability of reading off the latitude, hour angle , and azimuth without computation thereby eliminating mathematical errors. 9. A ship's bearing was determined by settings of the astronomical triangle consisting of declination, latitude, altitude, hour angle , and azimuth. 10. It is designed to give immediately the azimuth and hour angle by observation of the altitudes of the heavenly bodies.
