Thanks very much! it works. Now I only still have the problem, that the layer Grid doesn`t show the same coordinates. They still display in 180°W-180°E Do you/anybody have a furhter hint for me. Thank, andrea
Do you mean in layout view, adding a graticule to the map? That functionality was never added to allow it to label 0-360. You might have to create the grid, but unlabelled and label it by hand or use the Create Fishnet tool to generate a graticule, but again it would have to be labelled manually.