Harry Potter's fifteenth birthday

"In fact, he was so angry at them that he had thrown both their birthday presents of Honeydukes chocolates away unopened, though he had regretted this after eating the wilting salad Aunt Petunia had provided for dinner that night."

- Harry Potter and the Order of the Phoenix

Harry Potter's fifteenth birthday was only acknowledged by Hermione Granger and Ronald Weasley. Hermione sent Harry a birthday card from the Order of the Phoenix headquarters to Harry's room at 4 Privet Drive. Hermione and Ron both sent chocolates from Honeydukes, although he threw them away, as he was frustrated at the fact that they were both presumably having fun together. He later regretted this action as he had to eat Petunia Dursley's unappetizing salad the same night.