Diurnal arc


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the arc described by the sun during the daytime or while above the horizon; hence, the arc described by the moon or a star from rising to setting.

See also: Diurnal

References in periodicals archive ?
With harmonic ties clearly restored, the underlying D/E tonic is left turning back and forth on a solo cello, closing the long diurnal arc as the carnival colors fade.
Pentecost Music
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