When you go to a community lot, the game will pause everything that is happening in your house. For example, if you leave your residence at 12 noon to go to a community lot and stay the whole day there, when you come back it will still be 12 noon. This glitch is very useful if you are a Romance aspiration Sim, because you can invite Sims to the community lot to develop Friendship, and not lose a day in your age. You can go to the community frequently, as long as you call a taxi back just when you get home.