On this special day, the students are going to wear a cap and gown.
His birthday is on the thirty-first of March.
On this special day, the man is going to propose her girlfriend.
I think he's going to be thirty-one years old
On this special day, they are going to go out for a romantic dinner.
On this special day, people are going to wear a costume.
On this special day, people are going to blow out candles on a cake.