Caskbill's DVC planner is awesome. It tells you booking and banking windows. Not sure of the exact web site but you can google caskbill and download his DVC planner. Cackbill is a moderator here on the DIS....
It's exactly 7 months, it does not go by number of days like dining reservations. So on December 30, you could make a reservation starting July 30 for up to 7 nights.
Plus, if you log into the member website, and go to My Vacation Points, it will tell you at the top of the page when you can use those points and if they need to be banked or not.
Caskbill's DVC planner is awesome. It tells you booking and banking windows. Not sure of the exact web site but you can google caskbill and download his DVC planner. Cackbill is a moderator here on the DIS....