Anyway, here's the summary of the fanfic I wish to share, as well as a link to the fanfic itself:
Everyone's heard of Dedalus Diggle's display of shooting stars in Kent. What most people don't know is why he did it.
It's a very short oneshot that says a lot about Dedalus as a character, instead of that offhand comment McGonagall made during the first chapter of Philosopher's Stone.
'I heard it. Flocks of owls… shooting stars… Well, they're not completely stupid. They were bound to notice something. Shooting stars down in Kent — I'll bet that was Dedalus Diggle. He never had much sense.'
I'm probably a total sap for liking this so much, but it was really well thought out. Dedalus Diggle is just that character you read about once or twice in the actual Harry Potter books and never think twice about.