Saturday, July 24, 2010

Perpetual Calendar

I had a subscription to Popular Science around 1970 for a few years and, I think, as part of that had this little perpetual calendar on a card that I carried in my wallet for decades.  It was only recently that I removed it and today I found a photocopy I'd made of it.

Here's the same calendar as part of an on-line auction.  It's good through 2059.