Explore: Hour Circle

In astronomy, the hour circle is the great circle through a given object and the two celestial poles. Together with declination and distance (from the

navigation, the hour angle is the dihedral angle between the meridian plane (containing Earth's axis and the zenith) and the hour circle (containing Earth's

along the celestial equator from the Sun at the March equinox to the (hour circle of the) point in question above the Earth. When paired with declination

other being hour angle. The declination angle is measured north (positive) or south (negative) of the celestial equator, along the hour circle passing through

horsepower-hour (hph), a measure of energy used in the railroad industry hour angle, a measure of the angle between the meridian plane and the hour circle passing

south pole of the sphere is a circle of 25 hours, fixed to the rings. On the axis is an index which goes around that circle, if the globe is turned around

point on the celestial sphere where the plane crosses the prime hour circle (the hour circle occupied by the First Point of Aries), also known as the equinox

meridian to the hour circle passing through the object. Unlike right ascension, hour angle is always increasing with the rotation of Earth. Hour angle may be

signs rise at two-hour intervals, it must now be about two hours prior to sunrise: 4:00 a.m. on Holy Saturday, April 9. The Seventh Circle, divided into three

"Portuguesecharts.com – Ateez – Golden Hour - Part.3". Hung Medien. Retrieved June 26, 2025. "Album Chart: 2025 Week 24". Circle Chart (in Korean). Retrieved June