Given how long the show is, is the current start time (8 pm GMT, 9 pm CET etc.) optimal? I'm thinking starting one hour earlier would make the time more tolerable further east, whereas 7 pm is hardly too early in GMT-countries. Or is it?
Here it starts around three o'clock in the morning (GMT +8) but I'm thinking of setting it around an hour earlier, depending on my ability to stay awake at that hour (and I'll be careful not to disturb my sleeping neighbours).
I think Eurovision does start at 7pm GMT as it starts at 8pm BST. I think it could start at 7pm without it impacting significantly on UK/Irish viewership, but I would say 8pm for us/9pm for Western Europe probably reaches the biggest amount of people.