Diurnal arc

Diurnal Arc
Science / Astrology / Diurnal Arc
Diurnal Arc: The time expressed in right ascension that it takes a planet or degree of the zodiac to move from its rising point on the horizon to its setting point.

diurnal arc The time expressed in right ascension that it takes a planet or degree of the zodiac to move from its rising point on the horizon to its setting point.

Diurnal ArcThe time in right ascension that a planet or degree of the zodiac takes to move from its rising point to its setting point. Diurnal ChartNativity of person born in the daytime, i.e. when the Sun is above the horizon.

Diurnal Arc. The arc through which the Sun passes from sunrise to sunset. At the Equinox this arc is 180°, or 12 hours of right ascension.

Instead of using great circles, the diurnal motion of the Earth causes a celestial object to intersect the cusp of the 12th House, after a sidereal-time interval equal to one-third of its semi-diurnal arc; ...

[Dotted lines represent diurnal arcs]
Looking to the North Point
In the second diagram, the numbered circle around the Pole Star contains the section of sky that never sets.

See also: Astrology, Degree, Horizon, Diurnal, Planet