[diarmuidie]

There isn't a single grid, but there is a large synchronous grid covering most of continental Europe: https://en.wikipedia.org/wiki/Synchronous_grid_of_Continenta...

[fulafel]

Maybe. Some of the "continental" grid is in Africa, the above second map doesn't color in Russian bits of Europe, and then there are the other European grids. But the high bit is that there are significant parts on not this grid, there are 6-ish grids.