Athanasius Kircher – Sciathericum Seleniacum Siue Lunare Expansium (The Selenic Shadowdial or the Process of the Lunation), “Ars Magna Lucis Et Umbrae” (The Great Art of Light and Darkness), 1646.
The spirals show the length of the Moon’s appearance in the Sky, with its Rising and Setting. The scheme gives the Moon twenty-eight Phases and the engraver has reversed the appearance of the Waxing and Waning Moons for the Northern Hemisphere.
Hermetic Rambling 