You need these 2 codes: Time set noon (#1200) and Time set midnight (#2400). Depending on how much stores you have bought if you do this back and forth (make sure you start out on noon) you will earn greater money than the $1000 cheat. IF you dont have enough money to buy stores use the $1000 cheat code (#2274666399). I recommend buying the jewlery stores cause the give you $500 per day.