There are 3 types of planners this year based on when you want your planning year to start. 17 month planners start in August and run 17 months through the following December. This lets you start your planner when the school year starts but have it through the end of the following calendar year. 12 month academic weekly planners start in August and run through July to mirror the school year. 12 month standard planners start in January and end in December to mirror the calendar year.