It's that time of year, everyone needs at least 12 good calendars to hang all over the house, right? Okay, maybe that's just me.
NASA.gov Annual Release
If you have Adobe Acrobat and glossy card stock, you can download (7MB PDF) and print the official 2011 International Space Station Calendar, that describes the work conducted on the ISS. The TJ Creamer groupies and the Garrett Reisman Fan Club will be particularly enthused this year about the "life as an astronaut" photo collections! There are amazing views from the Cupola in this year's edition, and for the first time I can recall, NBL training and Dynamic Posturography!
(Yes, there really is a Garrett Reisman Fan Club.)
NASA 2011 Calendar: He-Man Greg Chamitoff on the ISS
For an online and printable calendar for kids, go to NASA's Space Place to print the Children's New Millennium Calendar, or simply visit daily with the kids to see fun events and history.
The Space Store
Selling NASA's official 2011 wall calendar... unsurprisingly, this year it is very heavy on Shuttle nostalgia.
Astronomy, Horizon star-gazing, Meteor Showers, Comets, and Jupiter's moons eclipses.
The Year In Space
Keep up with all space events with their desk calendar, online calendar or weekly email detailing lunar phases, astronomical events, scientific exploration and beautiful space images. The YIS folks went all-out this year and added full-year calendars and four-year calendars to their spiral-bound collection.
Pomegranate Publishing SciAm Calendars
High-Resolution Space Photography, as presented by Scientific American. (Available in full size and mini versions)
Calendars.Com Space Selection
Space 2011 Wall Calendar: stunning images of stars, nebulae, and galaxies; other available calendars include Celestial Wonders, Astronomy, the Solar System, and Lunar Year 2011.
Zazzle Space Collection
DEEP SPACE 2011 Calendar, Astronomy, Hubble and Galaxies calendars also available, and customizable! An interesting design-your-own kinda take... and for those on the fringe, there is the "Aliens and UFO" calendar. Not that I encourage that sort of thing ;)