Statute of Limitations
The prosecutor can wait the entire statute of limitations to file a formal charging instrument against you. In the case of a felony, that charging instrument is called an indictment.
But, unless you are certified as an adult, you will be charged as a juvenile, if you were a juvenile under the state's law at the time of the alleged offense.
Now, could a prosecutor knowingly or mistakenly get the date of the offense wrong? Yes, but that would be fairly easy to defend against. (Booking information, bonds, etc.) There really would have to be a vast conspiracy against you to let something like that slip through the cracks.
Austin Lawyer