Septimo die, sol sit ad occidentem, [luna autem inter orientem et occidentem] medias caeli teneat regiones, quod dimidia parte caeli spatio distaret a sole, item dimidiam candentiae conversam habere ad terram.
On the seventh day let the sun be towards the west; the moon occupies the middle region of the sky and has half of the shining hemisphere turned upon the earth because it is distant from the sun by a space equal to the half part of the sky.
final_alignments\Vitruvius_Architecture_Book_9.json