October 31, 1981.
We know this because in Book Seven, Harry sees his parents' tombstones and they show the date of their deaths (which occurs minutes before the attack on Harry himself) occurring on this date. This is also confirmed by a number of references to the attack occurring on Halloween.
When he was a baby
His name, Voldemort.
Tom Riddle is said to have opened the Chamber of Secrets in his fifth year at Hogwarts. This would place him at 16/17. The Chamber of Secrets is opened again, 50 years later when Harry is in his second year at Hogwarts. This would make Tom Riddle/Lord Voldemort 65/66 during the first book of Harry Potter.
"The big deal" is that it's what prompted Voldemort to go after Harry in the first place. The prophecy speaks of an enemy with powers to match the Dark Lord's -- that's Harry. Voldemort attacked Harry because of the prophecy, because he believed that the person of whom the prophecy spoke was his one and only threat. No prophecy=no Harry Potter books. ;)
At first he was afraid it would be Voldemort, but then he remembered the dementors.
Yes, because Voldemort sends the Avada Kedavra Curse at him but only manages to kill His Own soul in Harry that was accidentally Placed there the night Voldemort tries to kill Harry the first time... Harry Potter lives on.
His name, Voldemort.
Harry Potter hasn't died yet!
Harry Potter first saw Lord Voldemort on Quirinus Quirrell's head in the final chamber.
Tom Riddle is said to have opened the Chamber of Secrets in his fifth year at Hogwarts. This would place him at 16/17. The Chamber of Secrets is opened again, 50 years later when Harry is in his second year at Hogwarts. This would make Tom Riddle/Lord Voldemort 65/66 during the first book of Harry Potter.
Voldemort
"The big deal" is that it's what prompted Voldemort to go after Harry in the first place. The prophecy speaks of an enemy with powers to match the Dark Lord's -- that's Harry. Voldemort attacked Harry because of the prophecy, because he believed that the person of whom the prophecy spoke was his one and only threat. No prophecy=no Harry Potter books. ;)
Professor Quirrel (and technically Voldemort)
At first he was afraid it would be Voldemort, but then he remembered the dementors.
Harry Potter, Ron Weasley, Hermione Granger, Albus Dumbledore and Lord Voldemort.
Yes, because Voldemort sends the Avada Kedavra Curse at him but only manages to kill His Own soul in Harry that was accidentally Placed there the night Voldemort tries to kill Harry the first time... Harry Potter lives on.
On the back of Quirrel's head.
Lord Voldemort killed Harry Potter's parents. The killing of Harry Potter's parents happens before the main events of the books and was first mentioned in the first book. The plot of the third book explores who was responsible for Voldemort discovering where Lily and James were hiding. It was believed to be Sirius Black until he proved it was Peter Pettigrew. So while Voldemort cast the curse that killed them, Peter was the reason they died.