Like many creative types, I’m always forgetting what day of the week it is. This little accessory solves that problem this month, next month, and every month to come.

In case you’ve never seen one before, this is a perpetual calendar. The stainless steel slider is marked with the days of the week and the acrylic stand is printed with a pattern of numbers that works for every calendar permutation. Just slide the steel piece so that the correct day/date pairs are showing for the current month, then forget about it until next month.

Measures 130 x 72 x 33 mm (5.1″ x 2.8″ x 1.3″). Made in Japan.