The Annual Planner is only offered for several months a year and is always for Jan 1 - Dec 31 the following year. We may offer it up until a couple of months in a calendar year before we remove the option entirely, as nobody wants to buy a calendar that has already well-and-truly started.
Just like our other options, the Annual Planner is an inside page type that can be chosen when customizing your WTF Notebooks. As usual, you first need to choose a funny title, and then at the 3rd step of the customization process Just click the drop-down "Choose your inside pages" and add the Annual Planner to your notebook—it's that easy!
Annual Planner specifications can be found here: https://wtfnotebooks.com/pages/annual-planner