Why my birthday is not showing in Facebook?
Well, first birthday announcement does not show on people’s timeline. It only shows up on people’s newsfeed, under the tickler and in Events. Your birthday setting might be set to private, so no one would be able to see your birthday, including your friends. This also means other people are unable to check your birthday date if they specifically go to your profile page to find out.
To fix this problem, you can go on your Facebook profile page to change it. You would need to click “Update Info”, the button at your cover photo. Then choose “Contact and Basic Info”, followed by choosing the desired visibility setting. For this case choose to include friends on the right side of “Birth Date” and “Birth Year”. It will also show a warning if it’s set to “Only Me”. Your birthday notice should show on all your friends’ newsfeed now.