My god, I simply can't ignore this it has never been proven to be faster or slower in different places, if it has well then you have just broken the laws of physics. Think of time, the continuing sequences of events, as an arrow it either goes backwards or forwards and it never changes.
Now look at this below.
From this we are observing that the blue local clock is going faster than the red local clock. When two observers are in relative uniform motion and uninfluenced by any gravitational mass, the point of view of each will be that the other's moving clock is ticking at a slower rate than the local clock. The faster the relative velocity, the greater the magnitude of time dilation.
For instance, two rocket ships, A and B, speeding past one another in space would experience time dilation. If they somehow had a clear view into each others' ships, each crew would see the others' clocks and movement as going too slowly. That is, inside the frame of reference of Ship A, everything is moving normally, but everything over on Ship B appears to be moving slower, and vice versa.
From a local perspective, time registered by clocks that are at rest with respect to the local frame of reference, and far from any gravitational mass, always appears to pass at the same rate. In other words, if a new ship, Ship C, travels alongside Ship A, it is "at rest" relative to ship A. From the point of view of Ship A, new Ship C's time would appear normal too.