As we've seen in earlier versions of the watch, the two Moon disks are labeled https://www.replicauhrx.de/produkt-kategorie/bremont/ Nord and Sud (north and south) as each represents the Moon as seen from https://www.watchesx.co.uk/Collection/bvlgari/ the northern and southern hemispheres. The https://www.xhorloge.com/product-categorie/omega/ Sud disk, rather counterintuitively, is up top (north conventionally is at the top of most maps), but the reason for this is that to an observer in the southern hemisphere, it is the leftmost side of the Moon which falls into shadow first after a full Moon, and vice versa in the northern hemisphere.