Ethan O'Farrell

How would I use the formula, let's say, to calculate the gravitational time dilation on the moon?

I am curious about the formula for gravitational time dilation. I have scoured the internet and can't seem to find any explanation for the variables in the formula. I am aware of velocity time dilation and that formula, but gravitational time dilation stumps me. It should be noted I am only a sophomore in high school so i might not fully grasp all of the mathematics yet however, any help is much appreciated.

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