43890 Password formula

I need someone to break the formula of a password that changes every 30 minutes. It's a 11 or 12 digit number that changes every 30 minutes. I will eventually need a program that can create the passwords for me so if your a programmer that can figure it out your the top candidate for creating the program. I can provide you a list of passwords for this month and random passwords for anytime. Please PMB me.