May 14th, mid-afternoon
A few days earlier, when the owl had flown through his window and dropped the letter, Harry had been at his desk in his room, working. It was not abnormal that he, as a junior auror, received communications at all hours of the night and day, though they were rarely urgent. He glanced at the envelope quickly and, noting that it looked official but not urgent, he tossed the owl a treat, set the note aside and promptly forgot about it.
A few days later, he was digging through the papers on his desk, looking for something and found the envelope. He mumbled, opening it and reading. He gasped, dropping down in his chair... Oh, my God. My father is alive!. he said aloud to the empty room. He scribbled an owl quickly in reply:
Sirius, I want to see him as soon as possible. Sorry it took so long to get back to you. What's he like? Does he want to meet me?