Your date of birth in "RuneScape," a massively multiplayer online role-playing game, refers to the day your account was originally registered. It is used as security information to retrieve accounts if a player forgets his password or the password gets changed by someone else. The only way to change it is to relinquish the display name on the current account and create a new account with the same display name.
Click on the "Account" tab on the "RuneScape" home page. Select the "Change Display Name" option.
Sign in with your current account credentials. Select a new display name for this account.
Sign out and go back to the "RuneScape" home page. Click on the "Play Now" option.
Fill in your information for the new account to reset the date of birth.
Dates are calculated using Greenwich Mean Time.