The idea for this project was contrast the body time and the mechanical time. These two concepts appear in the book Einstein's Dreams by Alan Lightman. In the text "April, 24th 1905" from the book, Lightman talks how the body time and mechanical time works in our lives. Based on this text, we can assume that our weekdays work as mechanical time, due to the clock. In other hand, the weekend, it usually flows in a very different way, following the body time. So, the weekdays in the calendar follow the grid. But on the weekends, the days break the grid, each day in a different way.
The poster also contrasts the two concepts.