Schedule Your Mac to Shut Down Automatically [Tutorial] Mar 9, 2021 10:00 EST Here is how you can schedule your iMac, MacBook Pro, MacBook Air, Mac mini or Mac Pro to shut down automatically. macOS Allows You to Schedule an Automatic Shutdown of Your Mac at any Given Day or Time, Here is How it Works There are a lot of reasons why you would want your Mac to stay awake for extended periods of time. While it may serve the purpose you had in mind, but keeping any computer powered on for a long time is generally not a good idea. When you know that your work is complete (or has been completed) in the background, did you know you can set your Mac to shut down automatically at a predefined time? In fact, you can have it shutdown at the exact same time every single day of the week if you wanted to.