they are all full. 336 days later they are all lined up the same again, including the Sun so the Moons are all full at the same time again.-Im bad at maths tooBut further planets move slower than the nearer ones.So the inner one will move fastest and pass the outer ones.The planets can only eclipse the sun if they are the same apparent size (or bigger) than the sun.......
So what number is evenly divisible by 7, 14, 21, and 336? The answer is 336.
336/336=1
336/21=16
336/14=24
336/7=48
That is why I picked 336 as the year for your planet, it works out so neatly.
So if the 3 Moons start out lined up on exactly the opposite side of the planet from the Sun, they are all full. 336 days later they are all lined up the same again, including the Sun so the Moons are all full at the same time again.
It would happen every 21 days.
You don't need to be a genius in math to figure that out.
If by "eclipse" you mean a total solar eclipse as we see on Earth, there is no way to know. How large do these moons appear compared to the sun? Do these moons orbit in the same plane as the sun appears to move?
If by "eclipse" you mean a moon crossing in front of the sun, that would happen every 21 days for satellite x, every 14 days for satellite y, and every 7 days for satellite z assuming they all orbit in the same plane as the sun appears to move.
Astrology is not astronomy.
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