para su cumpleaños

for their birthday

→ para
phrase Rare #28,537
for their birthday Used when giving, doing, or planning something in connection with someone’s birthday. The possessive can mean his, her, or their depending on context.
SP: Le compré un pastel para su cumpleaños.
EN: I bought them a cake for their birthday.

Tom no sabe lo que Mary quiere que él le compre para su cumpleaños.

Tom doesn’t know what Mary wants him to buy her for her birthday.

Tom le preguntó a Mary qué quería para su cumpleaños.

Tom asked Mary what she wanted for her birthday.

Pensé que alguien merecía algo especial para su cumpleaños.

I thought someone deserved something special for their birthday.

Le di a mi hermana un collar de perlas para su cumpleaños.

I gave my sister a pearl necklace for her birthday.

Tom no sabe qué regalo comprar a Mary para su cumpleaños.

Tom doesn't know what gift to buy Mary for her birthday.

Mary recibió muchos regalos para su cumpleaños.

Mary received many gifts for her birthday.

Desde entonces, para su cumpleaños siempre nos las arreglamos para salir.

Since then, we always manage to go out for her birthday.

— Parásitos (2019)

Él nunca olvida llamar a su madre para su cumpleaños.

He never forgets to call his mother on her birthday.

Quiero avisarte que voy a casa para su cumpleaños.

I want to let you know that I'm coming home for his birthday.

— Un día de furia (1993)

Tom no sabe lo que quiere para su cumpleaños.

Tom doesn't know what he wants for his birthday.