IPad 2 Year = 2558 BE

My Ipad 2 and my Ipod Touch 4G have been pretty weird ever since I got them, their time and date is WAY before this time period, it says 2558 BE. Seriously, my parents don't want to get it fixed, because they say that if it is fully functional, then it's fine. I don't think so, I can't do glitches in games, I can't do pranks, and I can't do things I want to do, please help me. I really want to get this fixed.