Dark mode in Google Calendar
Google Calendar has been given a new look and along with this new look comes the ability to switch between light and dark mode.
Step 1 - Click the settings wheel and go to 'Appearance'

Step 2—Choose the mode you would like to use, and you can also select the 'Device default' theme options.

Step 3 - Once you have selected the mode you will see the screen change, you can click 'Done'.

Step 4 - We selected dark mode as you can see below. You can change the appearance at any time.

We love it.