We’re watching the dinner scene from The Hobbit which, my wife claims, takes place on this very day… her birthday (4-27)*.
So, what fictional happenings have occurred on your day of days? While I know that some things have happened on my birthday, damned if I can remember them now.
*If you know otherwise, don’t worry about telling me - it’s not like I’m going to argue with her about this. 
Shirley Jackson’s The Lottery. June 27.
The controlled demolition of the World Trade Center. :rolleyes:
(Sorry, I’m a 9-11 baby.)
The People’s Revolution of the Glorious Twenty-Fifth of May, Discworld.
Frodo and Sam journeyed to the foot of Mount Doom, while the Army of the West camped in the Desolation of the Morannon. (March 24th; the following day was the destruction of the One Ring.)
St. Patrick drove the snakes out of Ireland.
(I actually don’t think that was meant to have happened on March 17th, but it is a fictional event so I can have it happen on March 17th when I do the gritty reboot.)
Easter, every eleven years.
The Edmund Fitzgerald sank.
Robinson Crusoe was shipwrecked in 1659 (source: D. Defoe).
My birthday is on Whacking Day.
Kim Jong Il’s ‘official’ birthday, the one with the double rainbow, new star heralding his birth, and other such fun (also his actual recorded birthday, which was much duller, and took place the previous year).
Oh, and the fellowship leave Lothlórien; nothin’ too exciting.
HAL 9000 was first activated on January 12, 1992 (or 1997, depending on if you’re going by the book or the movie). That’s the day before my 30th or 35th birthday, and that’s the closest I’ve seen.
FICTIONAL???
Jesus was born. Supposedly.
My birthday is apparently on National Blasé Day.
So, meh.
It was the day the machines took over.
Based on last week’s Agents of SHIELD, I am exactly 19 years older than Daisy (Skye/Quake) Johnson.
If I remember correctly, Marty McFly did his time traveling in BTTF on my birthday, Oct 26.
Carrie White – of the Stephen King novel – was born. (September 21st is also King’s birthday.)
Something good happened to whoever wrote the Earth, Wind and Fire song “September”: the first line is “Do you remember the 21st night of September…”
Betty and Barney Hill were abducted by aliens a few hours after I was born.