Reusing and Recycling Calendars - 28 Year Cycle

I never realised a calendar is reusable every 28 years! I found this out from  environmentteam.com. It's a great idea to reuse and recycle them, although I can't think of anyone who would keep an unused or old calendar for that long. I imagine there to be a few random shops all over the country who have old calendars for sale but I haven't found one yet. Shabby chic, old boutique, 50's, 60's, doilies and teacups and saucers are all more fashionable at the moment, so some people might like to have a slightly tatty looking calendar on their wall!