Earth hour or the match on the pitch?

I'm proudly to announce that Saturday 28Th March Romania will join for the first time officially the global movement named Earth hour. So Saturday night the ones among you who feel like they want to give a message to the world about the global warming and about how little is needed to prevent it are invited to join the entire world and switch off the light and appliances for an hour starting at 20.30. Take action!

http://www.earthhour.org/home/

P.S. I wonder: what will happen on Saturday because at the same hour begins Romania -Serbia football match?