Whenever we look at calendars the dates of every month are already there, but how about one in which each date gets revealed every day. You don’t have to tear off any paper or replace any thing nor it is anything digital. This is a very unique type of calender design that uses capillary action to let the dates emerge on its own as the days pass by.

Designed by Spanish designer Oscar Diaz, this calender uses ink that spreads through the paper[with numbers on it] to show the date of a day of a particular month. It has been so manufactured that only a single number gets revealed each day. A very beautiful concept indeed and it gets more interesting to know that the Ink Calender has been designed for a year with different ink colors for different months, like three different shades of green for Spring, dark blue for Winter while orange and red for Summer!

[source: gizmodo.com]