You can go earlier, but to change it to a later date will be difficult. Simply go to the clerks office with your ticket, and request to be placed on the calender that day. You will probably have to sit there for a while.You re right. You re in a ton of trouble being that you have a provisional license, and you ve shown a disregard for the restrictions they include. It is possible that your provisional may be suspended, and you won t be allowed to drive again until you turn 18.
What sort of case is this? What sort of court date is this? If this is a criminal case, the prosecutor needs time to present the case to the court. The only way to answer this question is for you to go visit the court clerk. They can change the date for you.
there should be a number on your subpoena / traffic citation .. it never hurts to call or have your lawyer see if he can get it changed if its a criminal or civil matter.