Follow the quick money bee hive, solar panels, or wind turbine tip, because you need stuff making you money by the hr. Fast fwd using the 120-time scale to exactly 11:59 pm and pause and switch back to the normal time scale. Then exit pause menu and repeatedly as fast as you can push in on the left joystick until midnight. You will see a 10X to 20X jump in your hourly cash for that hr, and the amount you make in an hr will flash 10-20X's. It only works at 11:59 pm though.