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An arc of the equinoctial intercepted between the horizon and the hour circle of the object at rising and setting. As related to the sun, it is the time he rises before, or sets, after 6 o'clock.
An arc of the equinoctial intercepted between the horizon and the hour circle of the object at rising and setting. As related to the sun, it is the time he rises before, or sets, after 6 o'clock.