Well we'll have to wait until Saturday night to find out. And there could be a bit of scope for the dates to move if the winning (or host if the winners don't host) country has a particular sensitivity to those dates. Doubt they will changce though.
FA have now revealed the FA Cup Final is May 5th next year, with the Premier League ending the next week, so the Champions League final must be May 19th. That moving to Saturday has affected when Eurovision can be aired too.
ESC2012 will have to be a 6pm UK start at least. Can't possibly run at 8 UK ... Midnight in Baku.
When Moscow hosted the start time was 20:00 as usual which equated to 23:00 their time. Isn't the time it starts something the host country just has to accept?
I've just had a look around to see Azerbaijan's venues and it doesn't look good. The biggest indoor music venue seems to only hold around 2,500 people with none of the football stadia having roofs which would make them void for hosting the eurovsion.