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 for SuperCheats.com.
Check out our free Gen V Pokemon Game Guides for more tips and a complete walkthrough:
Pokemon Black Game Guide
Pokemon White Game Guide
Added by: Team SuperCheats Apr 7th 2011, ID#15679
Super Cheats is an unofficial resource with submissions provided by members of the public. These are not usually tested by us (because there are so many), so please use them at your own risk.