On your birthday (the date you entered into your DS for your birthday) there are several special events you can look forward to:
(1) Birthday Weather: Routes 14 and 15 are normally weather-engaged, but on your birthday they will have clear and sunny weather.
(2) Nurse Joy wishes you joy on your birthday: Just speak with the nurse in the Pokemon Center for your special birthday greetings.
(3) The Cake is NOT a Lie: Visit the Pokemon Musical and talk to the owner to receive your birthday cake.
Tip by CMBF
Check out our free Gen V Pokemon Game Guides for more tips and a complete walkthrough:Pokemon Black Game GuidePokemon White Game Guide