Linked from
The 15 pages that link to Gravitational time dilation, each with the reason it gives.
Black holeRelated: Strong gravity changes how clocks near a black hole compare with distant clocks.
SpacetimeRelated: It shows that spacetime's temporal geometry varies with gravity.
WorldlineRelated: Comparing worldlines through curved spacetime reveals differing clock rates.
Curved spacetimeRelated: It is a measurable consequence of spacetime geometry near massive bodies.