See the supplement to the question concerning the earth's revolution and the moon's revolution Suppose that the earth and the moon start at a certain time. How long or how many times does the earth revolve around the sun, and both the earth and the moon revolve back almost to the original starting position?

See the supplement to the question concerning the earth's revolution and the moon's revolution Suppose that the earth and the moon start at a certain time. How long or how many times does the earth revolve around the sun, and both the earth and the moon revolve back almost to the original starting position?

On average, the earth's revolution time is 365.25 days
The moon goes round for 27.21 days
The algorithm should be 365.25-12 × 27.21
Figure out the time the Moon leaves each year
And then look at a few. This time is a multiple of 27.21
I'm lazy~

What is the earth's revolution, rotation period and the moon's revolution, rotation period and earth's density?

Earth
The revolution cycle is one year, 365.25 days to be exact
The rotation period is 1 day,
Density 5.515 g / cm3
Moon
Revolution and rotation are all in one month, that is, 27 days, 7 hours and 43 minutes