How many days are required for the Moon to complete a cycle of phases from the new Moon position represented in the diagram to the new Moon the following month? 1
22d
2
27.3d
29.5 d
4
365.26 0
Please help.

29.5 days

Explanation:

However, it takes our Moon about 29.5 days to complete one cycle of phases (from new Moon to new Moon). This is called the synodic month. The difference between the sidereal and synodic months occurs because as our Moon moves around Earth, the Earth also moves around our Sun.

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