Are there any online tournaments in Europe?

I wish to attend to some kind of tournament, never did it before. FGC is almost non existant where I live, and I wish to participate in something.

Are there any online tournaments that occur between 10 AM and 5 PM CST? It is the approximate time im available for games.

There is quite alot, in terms of an actual tournament with standard rules The Dutchbrawlers host KOTR once a month. If you like tournaments with gimmics you should take a look at KI RCT, KI Royal Rumble (Signup closes tomorrow though) and KI Fastlane.