Just when you think you’ve seen them all, someone comes up with something new and unusual, like the concentric rings of this automated perpetual calendar. What we really like about the design ...

Don’t miss this handy freebie: a perpetual birthday calendar that’s perfect for keeping track of birthdays and other spe ...

Create a DIY perpetual calendar using this free watercolor printable! It’s easy to make with Mod Podge and a few other basic supplies. Skills Required: Beginner. It helps to have some experience ...

The latest addition to that range is the new Parmigiani Fleurier Tonda PF Hiriji Perpetual Calendar. Described as a "horological expression of the Tablular Islamic calendar" this is a watch with ...