This may indeed be the most earth shattering problem with Stackoverflow. I don't think I need to point out that this is big deal, but I just did.
The Legendary Badge's FAQ description is difficult to interpret.
I propose "Earned at least 200 reputation on each of 150 individual days"
This ought to remove the confusion regarding "on 150 days" as in "on half a year????"
It should also remove the confusion regarding "is it consecutive days or not?"