Birthdays

Does anyone know the birth days of Hilliard or Broadway? Are they old for their grade? Their stats are unbelievable. When colleges are recruiting, they are looking for the best kids coming out of high school. But, some kids are young and some are older. I have heard it talked on this board, that the older kids come highly rated into colleges, but sometimes underperform. Some of the 3-star kids pass them up and no one realizes that the older guys had peaked out, while the younger ones continued to improve. Any thoughts on this topic? Do you know anything about these two kids?