This commission was ordered by the Département of Essonne (91) a sundial for the Jean Moulin secondary school in Verrières-le-Buisson, completed in October 2002. It is a horizontal sundial with a parallelepiped-shaped base. It is entirely made from green granite decorated by sandblasting and gold leaf application. It is in a cast-iron style. The four faces pointing to the four points of the compass have decorations with the following symbolisms: to the North, photosynthesis; to the South, light diffraction; to the East, the dawn; to the West, twilight. Four mottos—to the North in French, to the South in Spanish, to the East in German and to the West in English—are engraved on the ground opposite the four faces. The sundial is erected in a landscaped interior courtyard at the school.