Time to bump an old topic...
In one of the AoF3 threads, I wrote about the birthday secret in the game where a character can do unlimited supers/DMs, and ppl kept asking me about it.
Well, I have some new infos about it. Apparently, the correct birthdays for the charas are:
Ryo - 08/02
Rody - 07/24
Wang - 04/17
Kasumi - 03/29
Karman - 06/13
Robert 12/25
Lenny - 05/20
Set the current MVS date to one of the above, choose the right character and off ye go.
I don't know about the boss birthdays (Sinclair and Wyler), but there's a code to play them, so it may be possible to enter birthdays for them as well.
About birthday secrets on homecart/CD: Only the MVS has a calendar, so you won't be able to input a specific date in order to set a chara to unlimited energy. AFAIK, the birtday secret also exists in the home versions, it just appears randomly.
If you have more info about it, let me know.