Time Marches On - Measurement of Time and the Calander in Eorzea

[Bowen]

Just to be utterly nit-picky, Eorzra doesn't have months, they have moons, as the waxing and waning of a moon fits in four cycles of eight days. Assigning the term month is something I think we players have done.

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.

[Catapult]

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.)