How to show birthday on Twitter

Click the three dots to reveal the 'More' menu.

Click "Settings and privacy"

Click "Account information"

Click 'Add your date of birth to your profile"

You will be redirected to your profile page. Click 'Edit Profile'

Scroll to the birth date section. Click "Edit".

Click 'Edit' again.

Control who can see your birthday by clicking the 'Who sees this' dropdown menus for the month and day or the year of your birth date. Select from the following options: Public Your followers People you follow You follow each other Only you

When you're ready, click Save.