Typo in character creation?

When you're a new character and you're selecting their birthday, the days do not match up.

For example:

Pick "First Astral Moon." Then go and pick the 29th day. It'll say "29th Sun of the 1st Astral Moon" and underneath that, it will show as "1/28." Shouldn't it be 1/29? The error also happens on the 30th, 31st, and 32nd. From what I noticed, it happens on ALL of them, and the dates vary. For example, in the First Umbral Moon, the 8th day is messed up, along with others.