For pity's sake BB, why are you still doing this?
Just logged in to find servers closed for database maintenance an hour ago.
Warning has clearly been put up somewhen today, so yet again those of us on different timezones have been stuffed, and even the 9 to 5'ers will have had no chance to rearrange schedules in time to accommodate this interruption.
Now the French servers posted this up 2 days earlier, so on there we had time to adjust, but here (and sadly on German servers too), the first we hear of it is after the deed has been done.
There goes another week's login progress again, and explorers will be sitting idle and buildings unbuffed (particularly bad as some resources have been completely drained by the Jubilee event).
You knew this was coming at least 2 days earlier yet chose not to inform us until far too late.