Originally Posted by
Leviticus
I'm sure the coordinates are correct unless they are being jammed by the military or the government (unlikely).
Yes, but e.g. China have a offset in the maps. If you check google maps with google satellit you will see the difference, they doesnt fit. If you are in china they will show you the right map without the gap. So if you downloaded a google offline map when you was abroud and travel to china, you cant use it. If you download the map while you are in china there is no gap.