I am constantly mocked to be carrying around a "day planner" in the digital age, but what can I say. I am old-school! I struggled to find a day planner that I could use September to September for my school year planning, and the 18 month feature allows you to either do September to September or December to December (assuming you will replace it with another). I picked this particular planner for a couple of reasons. First, I am an avid Moleskine fan, so it was a natural choice. Second, it is set up in weeks, which allows me to scope out my whole week, not just a smidge of days. Third, the addition of the lined, empty page to the right of the week's planner is perfect for my To Do lists for each week.