Character Creation, Birth date selection values are off

Not sure if this would be the right place to put this? More of a peeve, since I wanted to use my actual birthday 6/12.

When selecting your birth date, if you're on the Third Umbral Moon, when you select the 8th Sun, you will still see it as the 7th Sun, then of course, everything after that is One day back. So, 9th becomes 8th, 10th will become 9th and so on.

From the 1st through 7th, it is correct dates, however.

The Gregorian calendar =/= to Eorzean calendar (note that all sun moon phase on the calendar have the same number of days in them unlike Gregorian calendar)
either take the equivalent conversion or set it true in Eorzean calendar to make it 6/12 so it show as 6/12 (would have to recreate character though or see if you can get a character remake not sure if that will let you change the birth date)