Quote Originally Posted by Bowen View Post
Would that mean they use a Lunar calendar? (I'm not sure exactly how that works.)

If so, then how, when we choose our character's birthdays, are there twelve months that correlate with our real world ones? I'm confused.
Correct. Each of the twelve moons (6 pairs of astral and umbral moons corresponding to the turn of the elements, astral before umbral, and associated with the respective deity) lasts for 32 days, allowing the player to equivocate them to months.

So, for example, Thal's nameday is the 10th sun of the 1st Umbral Moon. (We would mundanely think of this as the tenth of February.)