Somebody do the maths for me please x

[Stitch's Greatest Fa]

Hello, we arrive in WDW on 17th August 2013, what date can I start making ADRs? I know it is 180 days out, but someone please do the maths for me and tell me the actual date.
Thanks
x

 

[luke]

This should help

http://pscalculator.net/pscalc.php