The Aquilescian Calendar is the universal standard calendar. It is based on the Aquiles Prototype, and has been in use since the foundation of the United Sol Republics in 8/13/23.

The calendar is divided in three time magnitudes: cycle, ellipse, and rotation. These magnitudes are represented as small objects within the Aquiles Prototype, which move at a constant speed, along with a standing mark, and align at the same point once every cycle, representing a new one.

Every cycle is composed of 15 ellipses, and every ellipse is composed of 50 rotations.