Oh my gosh this is amazing. So simple, and yet so complex. Makes you wonder, "why didn't I think of this," huh? :P

Thumb Calendar










According to the website, you just:

1. Find the month you want to read.
2. Use your thumbs to cover the numbers that are not directly below the month header.
3. Note the color of the month header. The last day of the month is rendered in the same color.