Take a look at this thread:
In the alliance guild, we primarily raid in the evening Eastern time t/th 8:30-10:30 server and there is also a group that raids Sat/Sun 8:30-10:30 but its less consistent in its the schedule. The Sat/Sun group is on Normal and is open to everyone and the T/TH group is in heroic and since making that jump we are a little picky (ilevel, heart level, dps) but we are willing to work with people and help them gear up.
We don’t have a regular open M+ group on the schedule but we do get a lot of people interested if you are looking to a run keys.