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The anti-clockwise movement of the earth in daily rotation around her axis.

The horizon (represented as a green disk) stretches out to the stars and coincides with the earth's and the celestial equator.

Date: circa 4 September
Interval: two hours
Steps: 30 degrees.

At the end of summer the Sun remains day and night just above the horizon.

         
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The horizon intersects with the Sun's apparent path, the ecliptic, at two points: the eastern is called Ascendant, the western point is the Descendant.