There are three moons in the skies above Adnati.
Of these, Lunaal, a mottled gray orb, is the largest and brightest. Lunaal takes 29 days to cycle from a new moon through the full moon and back to a new moon. The twelve months of the Adnati Common Calendar roughly corresponds to Lunaal’s cycle. Sages understand that Lunaal must be the closest to Adnati is the closest of the three moons based on how it eclipses the others when their paths cross. It is the most dominant celestial body in the heavens, other than the Sun, and when people simply say “the moon” in the Common Tongue, it is Lunaal that they are referring to.
The second moon, both in distance from Adnati and in apparent size to the naked eye, is Raudraal, sometimes called the Red Moon. To the naked eye, Raudraal appears to have a diameter a quarter of Lunaal’s. Sages know that this may be deceptive, as Lunaal is also clearly closer, since Lunaal eclipses Raudraal when their paths cross. It takes Raudraal 40 days to cycle from a new moon through the full moon and back to new. The ten-day week in the Common Calendar is based on one-quarter of Raudraal’s cycle.
The third moon, Caerudraal, is known as the Blue Moon, though sages continue to speculate fruitlessly whether the hue comes from oceans on the moon’s surface or from minerals in its soil. It takes 77 days for Caerudraal to complete its full lunar cycle.