Nothing is worse than Facebook birthday notifications for randos you haven't talked to since high school. Thankfully, it's very easy to turn them off.
Step 1: Click the "globe" icon, then click "settings."
Step 2: Click the button that says "on" next to "birthdays" and change it to "off."
Step 3: Live the rest of your life as a friendless hermit.
(Source: Battlefield Earth, obviously)
You are welcome.