The 1970s
1979 (Y-1) AD = 98 MM = 54 TR = 53 RH = 51 M = 21 BW = 9 CW = 7 PW = 3 FGW = 1 HG = 0
The 1990s
1991 (Y11) AD = 110 MM = 66 TR = 65 RH = 63 M = 33 BW = 21 CW = 19 PW = 15 FGW = 13 HG = 12 H&R = 11 GW = 10

(PS6)
Meanwhile, Quirrell, who let the troll in, heads for the Philosopher's Stone - but is stopped by Snape.
We have already seen that we can't trust the "real" calendar to give us the days of the week when we know the date, but just for interest sake, Halloween in 1991 was on a Thursday. The Gryffindor first years had Charms that morning and learned the [Wingardium Leviosa] spell.
(PS10)
1992 (Y12) AD = 111 MM = 67 TR = 66 RH = 64 M = 34 BW = 22 CW = 20 PW = 16 FGW = 14 HG = 13 H&R = 12 GW = 11
We have no indication of when this date might be, except that it is shortly before final exams.
(PS15)
The dates of this event are contingent on the dates of exams in Harry's first year. We are given dates for exams in books two and three--the first week of June--but that doesn't seem to be a hard and fast rule. The calendar for this book gives the date as June 4, based on the exam dates in the other books, but here on the timeline we'll play it a bit safer and just go with "early June."
(PS16)
(PS17)
This is about a week into the school year, so it didn't take Riddle long to force Ginny to open the Chamber.
(CS7)
(CS10)
(CS12)
(CS12)
1993 (Y13) AD = 112 MM = 68 TR = 67 RH = 65 M = 35 BW = 23 CW = 21 PW = 17 FGW = 15 HG = 14 H&R = 13 GW = 12
(CS13)

Later that night, the [Petrified] people are restored using [Mandrake Draught].
original artwork © [Agata Matteucci], used by permission
(CS17)
Harry meets Hermione and Ron in [Diagon Alley]They are all staying at the [Leaky Cauldron]. Hermione buys Crookshanks.
That night, Harry overhears Mr. and Mrs. Weasley in conversation - and learns that Sirius Black is after him.
(PA4)
(PA5)
(PA11)
1994 (Y14) AD = 113 MM = 69 TR = 68 RH = 66 M = 36 BW = 24 CW = 22 PW = 18 FGW = 16 HG = 15 H&R = 14 GW = 13
(PA13)
(PA15)
Outside the shack, though, it's a full moon - and Lupin transforms into a werewolf. In the confusion, Pettigrew escapes ([PA20]) and spends the next months searching for Voldemort in Albania (GF1).
With [Dumbledore]'s guidance, Harry and Hermione use a [time-turner] to travel back three hours and free Buckbeak. Harry then casts a [Patronus Charm] to save himself and Sirius from the Dementors, and he and Hermione ride Buckbeak to Sirius's rescue.
(PA21)
That night, Death Eaters raid the campsite and are driven away when [Barty Crouch Jr.] casts the [Dark Mark].
(GF8)
(GF9)
"'It's been an absolute uproar,' Percy told them importantly the Sunday evening before they were due to return to Hogwarts." (GF11)
It's clear from the story that the rest of the events described of that night are taking place the evening before they leave.
(GF11)
(GF23)
1995 (Y15) AD = 114 MM = 70 TR = 69 RH = 67 M = 37 BW = 25 CW = 23 PW = 19 FGW = 17 HG = 16 H&R = 15 GW = 14
(GF26)
Back at Hogwarts, it is revealed that [Barty Crouch Jr.], impersonating Moody all year, led Harry to Voldemort (GF35).
(OP9)
- 0100 [Sturgis Podmore] arrested at the [Ministry] by [Eric Munch] (OP14).
- 1100 Hogwarts Express departs King's Cross Station. Ginny introduces Harry and Neville to Luna Lovegood (OP10).
- After the train arrives at Hogwarts, Harry sees Thestrals for the first time (OP10).
- At the feast, the Sorting Hat sings a song of warning, and [Dolores Umbridge] is introduced (OP11).
- Seamus Finnigan admits he believes Harry is lying (OP11).

(OP16)
(OP18)
(OP22)
1996 (Y16) AD = 115 MM = 71 TR = 70 RH = 68 M = 38 BW = 26 CW = 24 PW = 20 FGW = 18 HG = 17 H&R = 16 GW = 15
"As the door swung closed behind them, Harry heard Phineas Nigellus's voice.
'You know, Minister, I disagree with [Dumbledore] on many counts...but you cannot deny he's got style....'"
(OP27)
- When [Minister for Magic] Cornelius Fudge refuses to step aside for Voldemort, the Brockdale Bridge is destroyed, killing dozens of Muggles.
- Amelia Bones, Head of [Magical Law Enforcement], and [Emmeline Vance], a member of the Order of the Phoenix, are murdered - the former by Voldemort himself.
- Destruction in Somerset is reported; Muggles suspect a hurricane, but it was probably the work of giants working for Voldemort.
- Dementors are breeding, causing cool weather and persistent mist across Britain.
- Cornelius Fudge is sacked and Rufus Scrimgeour, Head of the [Aurors], takes his place.
- A Junior Minister in the Muggle government, [Herbert Chorley], has a bad reaction to an [Imperius Curse] and thinks he's a duck. He is spirited away to St Mungo's] and [Kingsley Shacklebolt] takes a position as a secretary to the Muggle [Prime Minister] to guard him.
- Fudge visits the Muggle [Prime Minister] and introduces the him to Scrimgeour.
- Voldemort is furious with the failure of his Death Eaters to retrieve the [prophecy]. He assigns Draco Malfoy the task of killing [Dumbledore], at least in part to punish Lucius's failure, since Draco will almost certainly be killed.
- Narcissa Malfoy, followed by her sister Bellatrix, visits Severus Snape in his house on Spinner's End and get him to take the [Unbreakable Vow] that he will protect and Draco and, if necessary, kill [Dumbledore] for him.
- Harry spends two weeks at [number four, Privet Drive].
After the game, Ron and Lavender get together, much to Hermione's dismay.
There is no mention of what day this happened, but it was probably somewhere around early November.
(HBP14)

During the party, Harry follows Snape and Malfoy and overhears them talking about the [Unbreakable Vow].
(HBP17)
1997 (Y17) AD = 116 MM = 72 TR = 71 RH = 69 M = 39 BW = 27 CW = 25 PW = 21 FGW = 19 HG = 18 H&R = 17 GW = 16
(HBP18)
After a standoff, [Snape] arrives and kills [Dumbledore], and the [Death Eaters] flee the school. [Harry] then discovers that the [locket] is not the real [Horcrux], but rather that it was replaced by a fake one from [R.A.B.] ([HBP28]).
[McGonagall], now acting as headmaster, meets with the [Order] and with the [heads of houses], determining that students will be allowed to stay for [Dumbledore]\'s funeral ([HBP29]).
After rejecting Scrimgeour again and breaking ties with Ginny, Harry walks off with Ron and Hermione. He pledges to find the Horcruxes himself, and they pledge to stand with him the whole time.
(HBP30)
The 2000s
2004 (Y24) AD = 123 MM = 79 TR = 78 RH = 76 M = 46 BW = 34 CW = 32 PW = 28 FGW = 26 HG = 25 H&R = 24 GW = 23
2005 (Y25) AD = 124 MM = 80 TR = 79 RH = 77 M = 47 BW = 35 CW = 33 PW = 29 FGW = 27 HG = 26 H&R = 25 GW = 24
2006 (Y26) AD = 125 MM = 81 TR = 80 RH = 78 M = 48 BW = 36 CW = 34 PW = 30 FGW = 28 HG = 27 H&R = 26 GW = 25
