How to Turn Off Birthday Notifications on Facebook

facebook is sending me birthday notifications constantly and i want to stop them. not just the push notifications but also the ones inside facebook itself.

tried going through notification settings but it’s not obvious where birthday notifications specifically are controlled. facebook’s settings menu is a maze.

also not sure if there’s a difference between turning off the notifications versus unfollowing the birthday calendar from the facebook events calendar, which i think i may have synced to google calendar at some point.

where exactly is the setting for this? on both desktop and mobile if they’re in different places. and does changing it affect whether my own birthday shows up for others?