Various licensed Pikmin calendars.
Club Nintendo calendars
Club Nintendo had a tradition of releasing yearly calendars. Many of these had Pikmin pages present.
2002 game calendar postcards
Nintendo Dream released a set of calendar postcards in Japan for the year 2002. The January and June postcards were themed around Pikmin.
Pikmin 3 planner
A Pikmin 3-themed planner was released by Ensky in 2013. It was not specific for a certain year, so it could be used at any time. The planner also came with a sheet of stickers intended to be used for decorating the included planner. The dimensions are 175x90mm.
Pikmin 3 2014 calendar
In late 2013, Ensky released a Pikmin 3-themed 2014 stand-up desk calendar. It contains 14 pages, 12 for each month, one for the cover, and one for the overview of all the months.