In today's video I want to show you how to make amazing perpetual calendar from wood. It shows date, week day and month. The best thing that this calendar never will be out of date! All needed ...

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

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 ...

Long before sustainability became a trending topic, people invented reusable, perpetual calendars, but the non-digital versions of these are sometimes complicated tables that are hard to interpret.

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 ...