If we use one gravitational field in GR and try to desribe it, we will see that from the perspective of the observer on the centre of mass of the object the clock on the hovering observer (farther away from the gravitational field) runs faster, while from the hovering observer's perspective the clock on the centre of mass observer runs slower. Now what happens if we combine two gravitational fields? For instance if we use the Sun and the Earth and their combined gravitational fields. Does GTD add up, or does it cancel out? For instance, will an observer at the Earth still see that the hovering observer from the Earth's clock runs faster, but as he looks closer to the Sun the time will eventually slow down relative to his clock and the clock on the centre of the Sun will run slowly than his? How does this combination effect gravitational time dilation? Regards and thanks for your patience.