This is a 3D printable version of the Ring-a-date Calendar, inspired by the original design available on Etsy by giorgiodellabeffa.

It’s a reusable perpetual calendar where you can mark the day and month using colorful rings. A fun, functional, and stylish way to keep track of dates while adding a unique design touch to your desk or wall.

You can customize it by printing the rings in different colors and choosing your preferred material/finish. 
Perfect as a gift idea or as a creative addition to your workspace.