I've never really understood how the 18 months weekly planner notebooks work. For example, the Moleskine version (disclosure: no referral link).
For the Moleskine (or generally any 18 months weekly planner), the planner covers the time period of July 2012 to December 2013.
Why is it 18 months? What do you do after December 2013?
The 2013-14 version starts from June 2013 to December 2014, which means that you have to buy the planner, but you don't use June 2013 - December 2013 portion of the notebook.
What is the point? Is it just a better idea to buy it every single year when it releases?