I don’t know about you, but I prefer to leave my Mac running most of the time. There are exceptions to this, most notably when we have lightning storms. Yes, the iMac is on a UPS (Uninterruptable Power Supply), but safety is the best policy. However, what if you need to schedule your Mac’s off and on times?
Scheduling Your Mac
I am able to leave my Mac on all the time because it is in a home environment. I think it is a good idea to leave it on because macOS runs it’s own utilities and your backups in the background. Some people set their Mac to sleep, but I have had so many problems with the macOS sleep function over the years I just have gotten out of the habit of using it.
However, what if you need to shutdown your Mac every night. Perhaps your work would require it. Maybe you just don’t want people on your machine at home. Whatever the reason, if you need to shutdown and startup your Mac at a specific time, here is how you do it.
Go into the System Preferences and click on the “Energy Save” Pref Pane:
Once inside then click on the “Schedule” button bottom-right corner of the window:
That will drop down this scheduling sheet:
If you click on “Start up or wake” you can select from choices like “Every Day”, “Weekdays”, etc. Once you have selected the right day sequence just set the time and you are done.
Now, if you want the machine to shutdown at a specified time then check the bottom box and choose “Shutdown” from the drop down menu.
Then you can choose the “Day” parameter again (probably the same as Startup) and then set the time.
That is all there is to it! This is just a way eliminating one more thing you have to remember to do. It might be a time saver for you and save you a lot of grief if the Mac you use is in a work environment.