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ângulo horário

(Astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day.

        ângulo horário
        1
        After 36 additional hours angle of deflection reduced to about 30o.
        The Power of Movement in Plants
        2
        For the longitude, the altitude of the sun must be ascertained before and after noon, and two hour angles must be measured.
        The Fur Country: Or, Seventy Degrees North Latitude
        3
        There the captain fixed his position and used a chronometer to calculate his longitude, which he double-checked against his previous observations of hour angles.
        Twenty Thousand Leagues Under the Seas: An Underwater Tour of th...