Originally Posted by Vengeance

Well I'm guessing a year since the nine tails attack happened a little over a year from Obito's so called "death". If this is when Rin dies then Obito's attack on Konoha should follow shortly after within the next few months (manga time). Even given a years time hair simply doesn't grow that fast naturally.

I think the seals are probably there to hide the location from Sensory ninja.