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by gattr
1735 days ago
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Ignoring the (rather slow) orbital motion of the Moon, consider: the sky (and the Moon) appears to rotate 360°/24 h. This amounts to 360/(24*3600) = 0.004167 °/s. The apparent size of the lunar disc is about 0.5°, so it takes about 120 s for the Moon to move by its own diameter in the sky. Plenty of time. |
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