The great egg prediction contest of 2011

For this farm, we all know that the chicken(s) came first.  The real question, though, is when will the eggs arrive?  As Taperman mentioned a few weeks back, we're having an informal contest to predict when the first egg will be laid.  Winner gets a case of Mike's world famous homebrew.

You'll have to do your own research to make a fully educated guess, but the girls were hatched on May 5, and most rough estimates have chickens beginning to lay at 6 months old.  We have twenty chickens in total, and the contest is guessing the day of the first egg laid by any chicken.  Make your guesses in the comments, and we'll see who gets closest!