it's his birthday - "es su cumpleanos"
"Mi cumpleaños". That is how you say "my birthday".
"when is my birthday" translates to "cuando es mi cumpleaños" in Spanish.
cumpleanos
cumpleanos
Mi cumpleaños es (your birthday)
Cuando(when) es(its) tu(your) cumpleaños(birthday).
regalos
feliz cumpleaños
felis cupliano's is happy birthday
You can say "Feliz cumpleaños, Papá".
Well in Spanish they say Felix complianos
Cuando es tu cumpleanos?