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The apparent motion of the Moon and stars (and therefore constellations, as well) across the sky is mainly due to Earth's rotation - so about one full round every 24 hours. The Moon takes a little longer (close to 25 hours) for one full cycle, due to its orbit around the Earth.

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7y ago
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7y ago

At approx 15 degrees per hour.

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Q: How fast does the moon and Cassiopeia's chair move across the sky?
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