The Calendarium Cæli project was created using time-lapse photography of the changing sky; it empathetically relates the randomness of the human world and the cyclical rhythm that transcends it. A crucial dimension of the project is its temporal continuity and open multiplicity. Michal Kindernay maps the astronomical year through pictorial composition, resulting in a consistent synthesis of 24 hours, 12 months, 365 days. One day in the vertical scheme contains 4,320 images, the whole year containing 1,576,800 images. The chronological order of calendar days documents the evolution of light and wind conditions and humidity throughout the year.