This is the term Eorzeans use to describe a month, which "spans four cycles of eight Suns, and is thus the sum of thirty and two." Unlike real-world months, a moon's weeks are of equal length, representing the six elements and both polarities. The new moon phase fittingly falls on the first day of each moon. Throughout the month, the moon waxes to its peak, which occurs on the 17th, and wanes back down to the next new moon, which begins the next month. Again, it is unknown at this time if the daily element associations or moon phases have any impact at all, or if they are purely lore-based.