Just figured this out, and I wanted to share it here as well.

I wanted to display:

© 2019 Transistor Inc. All rights reserved.

in the footer of my website. I discovered the {{ now }} variable, but couldn't figure out how to format it to only show the year. (By default it shows the full current date).

Figured out you can modify it like this:

<p>© {{ now|format:Y }} Transistor Inc. All rights reserved.</p>