Well, if we really want to get into inconsistencies on that date:
Vito's birthdate, accoding to his tombstone in GF, was April 29, 1887. How'd it get moved to Dec. 7 in the flashback scene? Probably so FFC and Puzo could write a comic line for Fredo: "Japs didn't know it was Pop's birthday."


Ntra la porta tua lu sangu � sparsu,
E nun me mporta si ce muoru accisu...
E s'iddu muoru e vaju mparadisu
Si nun ce truovo a ttia, mancu ce trasu.