Well, I guess I should have said birth month to be more accurate. Maybe it's jsut my state that does this.
Note that the sticker in the bottom right corner says "JUL" (July)



That is the birth month of the owner of the vehicle, it just so happens. I don't know why, but this is how it works.

Hmmm... it appears your state has it too



Go check yours, I bet it has your month