Enable Dark Mode at Sunset in macOS 13

Yes, macOS 13 (Ventura) allows you to automatically switch between Light Mode and Dark Mode based on your local sunrise and sunset times. This built-in functionality is handled through the "Auto" appearance setting, which uses your Mac’s local time and Location Services to dynamically adjust the interface as the sun goes down.

How to Turn on Automatic Dark Mode

1. Click the Apple menu () in the top-left corner of your screen.
2. Select System Settings.
3. In the left-hand sidebar, click Appearance.
4. At the top of the window, locate the Appearance options: Light, Dark, and Auto.
5. Click Auto.

Once selected, macOS 13 will keep the light theme active during the day and automatically switch to Dark Mode at sunset. In the morning, it will switch back to Light Mode at sunrise.

Ensure Accurate Sunset Timing

For the transition to occur precisely at your local sunset, macOS needs access to your current location. If the switch happens at the wrong time, verify your location settings:

1. Open System Settings.
2. Click Privacy & Security in the sidebar, then select Location Services.
3. Ensure Location Services is toggled On.
4. Scroll to the bottom of the list and click the Details button next to System Services.
5. Ensure the toggle for Setting Time Zone (or System Customization) is enabled, then click Done.

With these settings applied, your Mac will accurately calculate daily sunset and sunrise times throughout the year without requiring third-party software.