KnowraHour angleLinked fromLinked fromThe 12 pages that link to Hour angle, each with the reason it gives.All 12Related 9Compared with 3Right ascensionCompared with: Unlike right ascension, it changes as Earth rotates and depends on location and time.Altitude (astronomy)Compared with: It tracks position relative to the meridian rather than height above the horizon.Horizontal coordinate systemCompared with: It tracks a time-dependent angle relative to the meridian, unlike azimuth around the horizon.