Jon Snow Birthday Activities - Tumblr Posts
@winterreigned gets a starter for Jon's birthday

Jon looked up at the sound of foot steps, it was strange, being back in Winterfell, knowing that once again he was a year older. He smiled softly when he saw that the one approaching him was his sister. "Good morning, Sansa." He wondered if she remembered that it was his birthday, or if the day did not matter.
@westerosiqueens gets a starter for Jon's birthday

Jon looked up at his queen, shifting on his feet as he stood near her. He had been at her side since she had come to Meereen, having ended up in the fighting pits shortly after he had left Westeros. The warrior had become a sworn shield, though did not take a vow of the Queensguard. They had been talking about ages, comparing and speculating on those around them. "I turn 19 today, your Grace," he states when asked his own age.
@ofashesandthorns gets a starter for Jon's birthday (and I am indulging in one of my many Jon AUs)

Jaehaerys turned his head at the sound of someone approaching him. He knows that they would likely start to look for him, as the party was in his honor after all. It was not every day that a King was a year older. "Lady Margaery." he greets. "I thought that you would be enjoying the festivities?"
Jaehaerys was now 19 years of age, and was king for nearly as long, having ascended the throne as the last remaining son of Rhaegar Targaryen, and the only son by Rhaegar's second wife. When Robert Baratheon had perished from wounds given to him in his battle with the late Prince Rhaegar it had left the realm in turmoil until Lord Eddard Stark had brought Jaehaerys to the Red Keep.
"Is King's Landing treating you well?"