One synodic month is longer than one sidereal month by about

Name: One synodic month is longer than one sidereal month by about
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A synodic month is the time it takes for the Moon to return to the same phase, such as full moon to full moon. This takes about 29.5 days. A sidereal month is the time it takes for the Moon to return to the same position relative to the stars, which takes about 27.3 days. The difference in length between the two is about 2.2 days.

One Synodic Month Is Longer Than One Sidereal Month by About