How do you calculate time dilation near a massive object?

[carcosachild]

Hello
I was wondering if someone could show me how to calculate the time distortion caused by a massive object , and explain me (if it seems necessary ) the formula :)
Thanks :)

 

[A.T.]

Hello
I was wondering if someone could show me how to calculate the time distortion caused by a massive object , and explain me (if it seems necessary ) the formula :)
Thanks :)

http://en.wikipedia.org/wiki/Gravitational_time_dilation