【press ,】 to see the menu.
This mod allows you to change it x2, x5 and x10. So when you are using x5, one second will be 5 minutes in GTA San Andreas. It is also possible to use /2, /5 and /10. That means that it slows down. So when you choose for /5, it will take 5 seconds for one minute.
With these choices, you have to 【press .】 to go back to the normal speed. Then you can press Y again to open the menu.
There are also other choices. You can forward time with 1, 5 or 10 hours. You can also go back in time with 1, 5 or 10 hours.