This clever seller has taken the "Keep Calm and Carry On" message and created a new slogan for each month of the year.
There is also a male version of the calendar.
And some good news for those of us in the southern end of the hemisphere - littlebrownpen offers a re-jigged version to suit our seasons.
On purchase you will be sent a PDF file with instructions on how to print them yourself. I think it's a fab idea. Whilst you are over there check out their other cute stationery items.
I can't get enough of Etsy and the creativity of the people that sell there.