The stone garden is a quiet place, where you can meditate and let time pass if you want to wait for a specific day. It is located directly northwest of your home. In order to use it, you first have to build it.
Just click on the sign northwest of your home.
A piece of stone
Just hit "E" to enter the stone garden and start meditating. You will slowly gain while doing so. To quit, hit "E" again. Compared to sleeping, the gain of is slower, but meditation doesn't stop even if you are fully rested.
A full day passes every 50 seconds
Note: Your game will not be saved here.